Add es6-shim as polyfill and minify underscore.js

Signed-off-by: Julius Härtl <jus@bitgrid.net>

7 files changed, 100 insertions, 4069 deletions

diff --git a/core/vendor/.gitignore b/core/vendor/.gitignore
index a74b7f89a39..6af1186c9b3 100644
--- a/core/vendor/.gitignore
+++ b/core/vendor/.gitignore
@@ -16,7 +16,7 @@ README*
 # underscore
 underscore/**
 !underscore/.bower.json
-!underscore/underscore.js
+!underscore/underscore-min.js
 !underscore/LICENSE
 
 # blueimp-md5
@@ -135,13 +135,11 @@ davclient.js/**
 !davclient.js/lib/client.js
 !davclient.js/LICENSE
 
-# es6-promise
-es6-promise/**
-!es6-promise/.bower.json
-!es6-promise/LICENSE
-!es6-promise/dist
-es6-promise/dist/*
-!es6-promise/dist/es6-promise.js
+# es6-shim
+es6-shim/**
+!es6-shim/.bower.json
+!es6-shim/LICENSE
+!es6-shim/es6-shim.min.js
 
 # base64
 base64/*min.js
diff --git a/core/vendor/core.js b/core/vendor/core.js
index e8e813f8492..d9b65f52a03 100644
--- a/core/vendor/core.js
+++ b/core/vendor/core.js
@@ -15,1550 +15,7 @@ void 0===c?d&&"get"in d&&null!==(e=d.get(a,b))?e:(e=n.find.attr(a,b),null==e?voi
 //     http://underscorejs.org
 //     (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 //     Underscore may be freely distributed under the MIT license.
-
-(function() {
-
-  // Baseline setup
-  // --------------
-
-  // Establish the root object, `window` in the browser, or `exports` on the server.
-  var root = this;
-
-  // Save the previous value of the `_` variable.
-  var previousUnderscore = root._;
-
-  // Save bytes in the minified (but not gzipped) version:
-  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
-
-  // Create quick reference variables for speed access to core prototypes.
-  var
-    push             = ArrayProto.push,
-    slice            = ArrayProto.slice,
-    toString         = ObjProto.toString,
-    hasOwnProperty   = ObjProto.hasOwnProperty;
-
-  // All **ECMAScript 5** native function implementations that we hope to use
-  // are declared here.
-  var
-    nativeIsArray      = Array.isArray,
-    nativeKeys         = Object.keys,
-    nativeBind         = FuncProto.bind,
-    nativeCreate       = Object.create;
-
-  // Naked function reference for surrogate-prototype-swapping.
-  var Ctor = function(){};
-
-  // Create a safe reference to the Underscore object for use below.
-  var _ = function(obj) {
-    if (obj instanceof _) return obj;
-    if (!(this instanceof _)) return new _(obj);
-    this._wrapped = obj;
-  };
-
-  // Export the Underscore object for **Node.js**, with
-  // backwards-compatibility for the old `require()` API. If we're in
-  // the browser, add `_` as a global object.
-  if (typeof exports !== 'undefined') {
-    if (typeof module !== 'undefined' && module.exports) {
-      exports = module.exports = _;
-    }
-    exports._ = _;
-  } else {
-    root._ = _;
-  }
-
-  // Current version.
-  _.VERSION = '1.8.3';
-
-  // Internal function that returns an efficient (for current engines) version
-  // of the passed-in callback, to be repeatedly applied in other Underscore
-  // functions.
-  var optimizeCb = function(func, context, argCount) {
-    if (context === void 0) return func;
-    switch (argCount == null ? 3 : argCount) {
-      case 1: return function(value) {
-        return func.call(context, value);
-      };
-      case 2: return function(value, other) {
-        return func.call(context, value, other);
-      };
-      case 3: return function(value, index, collection) {
-        return func.call(context, value, index, collection);
-      };
-      case 4: return function(accumulator, value, index, collection) {
-        return func.call(context, accumulator, value, index, collection);
-      };
-    }
-    return function() {
-      return func.apply(context, arguments);
-    };
-  };
-
-  // A mostly-internal function to generate callbacks that can be applied
-  // to each element in a collection, returning the desired result — either
-  // identity, an arbitrary callback, a property matcher, or a property accessor.
-  var cb = function(value, context, argCount) {
-    if (value == null) return _.identity;
-    if (_.isFunction(value)) return optimizeCb(value, context, argCount);
-    if (_.isObject(value)) return _.matcher(value);
-    return _.property(value);
-  };
-  _.iteratee = function(value, context) {
-    return cb(value, context, Infinity);
-  };
-
-  // An internal function for creating assigner functions.
-  var createAssigner = function(keysFunc, undefinedOnly) {
-    return function(obj) {
-      var length = arguments.length;
-      if (length < 2 || obj == null) return obj;
-      for (var index = 1; index < length; index++) {
-        var source = arguments[index],
-            keys = keysFunc(source),
-            l = keys.length;
-        for (var i = 0; i < l; i++) {
-          var key = keys[i];
-          if (!undefinedOnly || obj[key] === void 0) obj[key] = source[key];
-        }
-      }
-      return obj;
-    };
-  };
-
-  // An internal function for creating a new object that inherits from another.
-  var baseCreate = function(prototype) {
-    if (!_.isObject(prototype)) return {};
-    if (nativeCreate) return nativeCreate(prototype);
-    Ctor.prototype = prototype;
-    var result = new Ctor;
-    Ctor.prototype = null;
-    return result;
-  };
-
-  var property = function(key) {
-    return function(obj) {
-      return obj == null ? void 0 : obj[key];
-    };
-  };
-
-  // Helper for collection methods to determine whether a collection
-  // should be iterated as an array or as an object
-  // Related: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
-  // Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094
-  var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;
-  var getLength = property('length');
-  var isArrayLike = function(collection) {
-    var length = getLength(collection);
-    return typeof length == 'number' && length >= 0 && length <= MAX_ARRAY_INDEX;
-  };
-
-  // Collection Functions
-  // --------------------
-
-  // The cornerstone, an `each` implementation, aka `forEach`.
-  // Handles raw objects in addition to array-likes. Treats all
-  // sparse array-likes as if they were dense.
-  _.each = _.forEach = function(obj, iteratee, context) {
-    iteratee = optimizeCb(iteratee, context);
-    var i, length;
-    if (isArrayLike(obj)) {
-      for (i = 0, length = obj.length; i < length; i++) {
-        iteratee(obj[i], i, obj);
-      }
-    } else {
-      var keys = _.keys(obj);
-      for (i = 0, length = keys.length; i < length; i++) {
-        iteratee(obj[keys[i]], keys[i], obj);
-      }
-    }
-    return obj;
-  };
-
-  // Return the results of applying the iteratee to each element.
-  _.map = _.collect = function(obj, iteratee, context) {
-    iteratee = cb(iteratee, context);
-    var keys = !isArrayLike(obj) && _.keys(obj),
-        length = (keys || obj).length,
-        results = Array(length);
-    for (var index = 0; index < length; index++) {
-      var currentKey = keys ? keys[index] : index;
-      results[index] = iteratee(obj[currentKey], currentKey, obj);
-    }
-    return results;
-  };
-
-  // Create a reducing function iterating left or right.
-  function createReduce(dir) {
-    // Optimized iterator function as using arguments.length
-    // in the main function will deoptimize the, see #1991.
-    function iterator(obj, iteratee, memo, keys, index, length) {
-      for (; index >= 0 && index < length; index += dir) {
-        var currentKey = keys ? keys[index] : index;
-        memo = iteratee(memo, obj[currentKey], currentKey, obj);
-      }
-      return memo;
-    }
-
-    return function(obj, iteratee, memo, context) {
-      iteratee = optimizeCb(iteratee, context, 4);
-      var keys = !isArrayLike(obj) && _.keys(obj),
-          length = (keys || obj).length,
-          index = dir > 0 ? 0 : length - 1;
-      // Determine the initial value if none is provided.
-      if (arguments.length < 3) {
-        memo = obj[keys ? keys[index] : index];
-        index += dir;
-      }
-      return iterator(obj, iteratee, memo, keys, index, length);
-    };
-  }
-
-  // **Reduce** builds up a single result from a list of values, aka `inject`,
-  // or `foldl`.
-  _.reduce = _.foldl = _.inject = createReduce(1);
-
-  // The right-associative version of reduce, also known as `foldr`.
-  _.reduceRight = _.foldr = createReduce(-1);
-
-  // Return the first value which passes a truth test. Aliased as `detect`.
-  _.find = _.detect = function(obj, predicate, context) {
-    var key;
-    if (isArrayLike(obj)) {
-      key = _.findIndex(obj, predicate, context);
-    } else {
-      key = _.findKey(obj, predicate, context);
-    }
-    if (key !== void 0 && key !== -1) return obj[key];
-  };
-
-  // Return all the elements that pass a truth test.
-  // Aliased as `select`.
-  _.filter = _.select = function(obj, predicate, context) {
-    var results = [];
-    predicate = cb(predicate, context);
-    _.each(obj, function(value, index, list) {
-      if (predicate(value, index, list)) results.push(value);
-    });
-    return results;
-  };
-
-  // Return all the elements for which a truth test fails.
-  _.reject = function(obj, predicate, context) {
-    return _.filter(obj, _.negate(cb(predicate)), context);
-  };
-
-  // Determine whether all of the elements match a truth test.
-  // Aliased as `all`.
-  _.every = _.all = function(obj, predicate, context) {
-    predicate = cb(predicate, context);
-    var keys = !isArrayLike(obj) && _.keys(obj),
-        length = (keys || obj).length;
-    for (var index = 0; index < length; index++) {
-      var currentKey = keys ? keys[index] : index;
-      if (!predicate(obj[currentKey], currentKey, obj)) return false;
-    }
-    return true;
-  };
-
-  // Determine if at least one element in the object matches a truth test.
-  // Aliased as `any`.
-  _.some = _.any = function(obj, predicate, context) {
-    predicate = cb(predicate, context);
-    var keys = !isArrayLike(obj) && _.keys(obj),
-        length = (keys || obj).length;
-    for (var index = 0; index < length; index++) {
-      var currentKey = keys ? keys[index] : index;
-      if (predicate(obj[currentKey], currentKey, obj)) return true;
-    }
-    return false;
-  };
-
-  // Determine if the array or object contains a given item (using `===`).
-  // Aliased as `includes` and `include`.
-  _.contains = _.includes = _.include = function(obj, item, fromIndex, guard) {
-    if (!isArrayLike(obj)) obj = _.values(obj);
-    if (typeof fromIndex != 'number' || guard) fromIndex = 0;
-    return _.indexOf(obj, item, fromIndex) >= 0;
-  };
-
-  // Invoke a method (with arguments) on every item in a collection.
-  _.invoke = function(obj, method) {
-    var args = slice.call(arguments, 2);
-    var isFunc = _.isFunction(method);
-    return _.map(obj, function(value) {
-      var func = isFunc ? method : value[method];
-      return func == null ? func : func.apply(value, args);
-    });
-  };
-
-  // Convenience version of a common use case of `map`: fetching a property.
-  _.pluck = function(obj, key) {
-    return _.map(obj, _.property(key));
-  };
-
-  // Convenience version of a common use case of `filter`: selecting only objects
-  // containing specific `key:value` pairs.
-  _.where = function(obj, attrs) {
-    return _.filter(obj, _.matcher(attrs));
-  };
-
-  // Convenience version of a common use case of `find`: getting the first object
-  // containing specific `key:value` pairs.
-  _.findWhere = function(obj, attrs) {
-    return _.find(obj, _.matcher(attrs));
-  };
-
-  // Return the maximum element (or element-based computation).
-  _.max = function(obj, iteratee, context) {
-    var result = -Infinity, lastComputed = -Infinity,
-        value, computed;
-    if (iteratee == null && obj != null) {
-      obj = isArrayLike(obj) ? obj : _.values(obj);
-      for (var i = 0, length = obj.length; i < length; i++) {
-        value = obj[i];
-        if (value > result) {
-          result = value;
-        }
-      }
-    } else {
-      iteratee = cb(iteratee, context);
-      _.each(obj, function(value, index, list) {
-        computed = iteratee(value, index, list);
-        if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
-          result = value;
-          lastComputed = computed;
-        }
-      });
-    }
-    return result;
-  };
-
-  // Return the minimum element (or element-based computation).
-  _.min = function(obj, iteratee, context) {
-    var result = Infinity, lastComputed = Infinity,
-        value, computed;
-    if (iteratee == null && obj != null) {
-      obj = isArrayLike(obj) ? obj : _.values(obj);
-      for (var i = 0, length = obj.length; i < length; i++) {
-        value = obj[i];
-        if (value < result) {
-          result = value;
-        }
-      }
-    } else {
-      iteratee = cb(iteratee, context);
-      _.each(obj, function(value, index, list) {
-        computed = iteratee(value, index, list);
-        if (computed < lastComputed || computed === Infinity && result === Infinity) {
-          result = value;
-          lastComputed = computed;
-        }
-      });
-    }
-    return result;
-  };
-
-  // Shuffle a collection, using the modern version of the
-  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
-  _.shuffle = function(obj) {
-    var set = isArrayLike(obj) ? obj : _.values(obj);
-    var length = set.length;
-    var shuffled = Array(length);
-    for (var index = 0, rand; index < length; index++) {
-      rand = _.random(0, index);
-      if (rand !== index) shuffled[index] = shuffled[rand];
-      shuffled[rand] = set[index];
-    }
-    return shuffled;
-  };
-
-  // Sample **n** random values from a collection.
-  // If **n** is not specified, returns a single random element.
-  // The internal `guard` argument allows it to work with `map`.
-  _.sample = function(obj, n, guard) {
-    if (n == null || guard) {
-      if (!isArrayLike(obj)) obj = _.values(obj);
-      return obj[_.random(obj.length - 1)];
-    }
-    return _.shuffle(obj).slice(0, Math.max(0, n));
-  };
-
-  // Sort the object's values by a criterion produced by an iteratee.
-  _.sortBy = function(obj, iteratee, context) {
-    iteratee = cb(iteratee, context);
-    return _.pluck(_.map(obj, function(value, index, list) {
-      return {
-        value: value,
-        index: index,
-        criteria: iteratee(value, index, list)
-      };
-    }).sort(function(left, right) {
-      var a = left.criteria;
-      var b = right.criteria;
-      if (a !== b) {
-        if (a > b || a === void 0) return 1;
-        if (a < b || b === void 0) return -1;
-      }
-      return left.index - right.index;
-    }), 'value');
-  };
-
-  // An internal function used for aggregate "group by" operations.
-  var group = function(behavior) {
-    return function(obj, iteratee, context) {
-      var result = {};
-      iteratee = cb(iteratee, context);
-      _.each(obj, function(value, index) {
-        var key = iteratee(value, index, obj);
-        behavior(result, value, key);
-      });
-      return result;
-    };
-  };
-
-  // Groups the object's values by a criterion. Pass either a string attribute
-  // to group by, or a function that returns the criterion.
-  _.groupBy = group(function(result, value, key) {
-    if (_.has(result, key)) result[key].push(value); else result[key] = [value];
-  });
-
-  // Indexes the object's values by a criterion, similar to `groupBy`, but for
-  // when you know that your index values will be unique.
-  _.indexBy = group(function(result, value, key) {
-    result[key] = value;
-  });
-
-  // Counts instances of an object that group by a certain criterion. Pass
-  // either a string attribute to count by, or a function that returns the
-  // criterion.
-  _.countBy = group(function(result, value, key) {
-    if (_.has(result, key)) result[key]++; else result[key] = 1;
-  });
-
-  // Safely create a real, live array from anything iterable.
-  _.toArray = function(obj) {
-    if (!obj) return [];
-    if (_.isArray(obj)) return slice.call(obj);
-    if (isArrayLike(obj)) return _.map(obj, _.identity);
-    return _.values(obj);
-  };
-
-  // Return the number of elements in an object.
-  _.size = function(obj) {
-    if (obj == null) return 0;
-    return isArrayLike(obj) ? obj.length : _.keys(obj).length;
-  };
-
-  // Split a collection into two arrays: one whose elements all satisfy the given
-  // predicate, and one whose elements all do not satisfy the predicate.
-  _.partition = function(obj, predicate, context) {
-    predicate = cb(predicate, context);
-    var pass = [], fail = [];
-    _.each(obj, function(value, key, obj) {
-      (predicate(value, key, obj) ? pass : fail).push(value);
-    });
-    return [pass, fail];
-  };
-
-  // Array Functions
-  // ---------------
-
-  // Get the first element of an array. Passing **n** will return the first N
-  // values in the array. Aliased as `head` and `take`. The **guard** check
-  // allows it to work with `_.map`.
-  _.first = _.head = _.take = function(array, n, guard) {
-    if (array == null) return void 0;
-    if (n == null || guard) return array[0];
-    return _.initial(array, array.length - n);
-  };
-
-  // Returns everything but the last entry of the array. Especially useful on
-  // the arguments object. Passing **n** will return all the values in
-  // the array, excluding the last N.
-  _.initial = function(array, n, guard) {
-    return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
-  };
-
-  // Get the last element of an array. Passing **n** will return the last N
-  // values in the array.
-  _.last = function(array, n, guard) {
-    if (array == null) return void 0;
-    if (n == null || guard) return array[array.length - 1];
-    return _.rest(array, Math.max(0, array.length - n));
-  };
-
-  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
-  // Especially useful on the arguments object. Passing an **n** will return
-  // the rest N values in the array.
-  _.rest = _.tail = _.drop = function(array, n, guard) {
-    return slice.call(array, n == null || guard ? 1 : n);
-  };
-
-  // Trim out all falsy values from an array.
-  _.compact = function(array) {
-    return _.filter(array, _.identity);
-  };
-
-  // Internal implementation of a recursive `flatten` function.
-  var flatten = function(input, shallow, strict, startIndex) {
-    var output = [], idx = 0;
-    for (var i = startIndex || 0, length = getLength(input); i < length; i++) {
-      var value = input[i];
-      if (isArrayLike(value) && (_.isArray(value) || _.isArguments(value))) {
-        //flatten current level of array or arguments object
-        if (!shallow) value = flatten(value, shallow, strict);
-        var j = 0, len = value.length;
-        output.length += len;
-        while (j < len) {
-          output[idx++] = value[j++];
-        }
-      } else if (!strict) {
-        output[idx++] = value;
-      }
-    }
-    return output;
-  };
-
-  // Flatten out an array, either recursively (by default), or just one level.
-  _.flatten = function(array, shallow) {
-    return flatten(array, shallow, false);
-  };
-
-  // Return a version of the array that does not contain the specified value(s).
-  _.without = function(array) {
-    return _.difference(array, slice.call(arguments, 1));
-  };
-
-  // Produce a duplicate-free version of the array. If the array has already
-  // been sorted, you have the option of using a faster algorithm.
-  // Aliased as `unique`.
-  _.uniq = _.unique = function(array, isSorted, iteratee, context) {
-    if (!_.isBoolean(isSorted)) {
-      context = iteratee;
-      iteratee = isSorted;
-      isSorted = false;
-    }
-    if (iteratee != null) iteratee = cb(iteratee, context);
-    var result = [];
-    var seen = [];
-    for (var i = 0, length = getLength(array); i < length; i++) {
-      var value = array[i],
-          computed = iteratee ? iteratee(value, i, array) : value;
-      if (isSorted) {
-        if (!i || seen !== computed) result.push(value);
-        seen = computed;
-      } else if (iteratee) {
-        if (!_.contains(seen, computed)) {
-          seen.push(computed);
-          result.push(value);
-        }
-      } else if (!_.contains(result, value)) {
-        result.push(value);
-      }
-    }
-    return result;
-  };
-
-  // Produce an array that contains the union: each distinct element from all of
-  // the passed-in arrays.
-  _.union = function() {
-    return _.uniq(flatten(arguments, true, true));
-  };
-
-  // Produce an array that contains every item shared between all the
-  // passed-in arrays.
-  _.intersection = function(array) {
-    var result = [];
-    var argsLength = arguments.length;
-    for (var i = 0, length = getLength(array); i < length; i++) {
-      var item = array[i];
-      if (_.contains(result, item)) continue;
-      for (var j = 1; j < argsLength; j++) {
-        if (!_.contains(arguments[j], item)) break;
-      }
-      if (j === argsLength) result.push(item);
-    }
-    return result;
-  };
-
-  // Take the difference between one array and a number of other arrays.
-  // Only the elements present in just the first array will remain.
-  _.difference = function(array) {
-    var rest = flatten(arguments, true, true, 1);
-    return _.filter(array, function(value){
-      return !_.contains(rest, value);
-    });
-  };
-
-  // Zip together multiple lists into a single array -- elements that share
-  // an index go together.
-  _.zip = function() {
-    return _.unzip(arguments);
-  };
-
-  // Complement of _.zip. Unzip accepts an array of arrays and groups
-  // each array's elements on shared indices
-  _.unzip = function(array) {
-    var length = array && _.max(array, getLength).length || 0;
-    var result = Array(length);
-
-    for (var index = 0; index < length; index++) {
-      result[index] = _.pluck(array, index);
-    }
-    return result;
-  };
-
-  // Converts lists into objects. Pass either a single array of `[key, value]`
-  // pairs, or two parallel arrays of the same length -- one of keys, and one of
-  // the corresponding values.
-  _.object = function(list, values) {
-    var result = {};
-    for (var i = 0, length = getLength(list); i < length; i++) {
-      if (values) {
-        result[list[i]] = values[i];
-      } else {
-        result[list[i][0]] = list[i][1];
-      }
-    }
-    return result;
-  };
-
-  // Generator function to create the findIndex and findLastIndex functions
-  function createPredicateIndexFinder(dir) {
-    return function(array, predicate, context) {
-      predicate = cb(predicate, context);
-      var length = getLength(array);
-      var index = dir > 0 ? 0 : length - 1;
-      for (; index >= 0 && index < length; index += dir) {
-        if (predicate(array[index], index, array)) return index;
-      }
-      return -1;
-    };
-  }
-
-  // Returns the first index on an array-like that passes a predicate test
-  _.findIndex = createPredicateIndexFinder(1);
-  _.findLastIndex = createPredicateIndexFinder(-1);
-
-  // Use a comparator function to figure out the smallest index at which
-  // an object should be inserted so as to maintain order. Uses binary search.
-  _.sortedIndex = function(array, obj, iteratee, context) {
-    iteratee = cb(iteratee, context, 1);
-    var value = iteratee(obj);
-    var low = 0, high = getLength(array);
-    while (low < high) {
-      var mid = Math.floor((low + high) / 2);
-      if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
-    }
-    return low;
-  };
-
-  // Generator function to create the indexOf and lastIndexOf functions
-  function createIndexFinder(dir, predicateFind, sortedIndex) {
-    return function(array, item, idx) {
-      var i = 0, length = getLength(array);
-      if (typeof idx == 'number') {
-        if (dir > 0) {
-            i = idx >= 0 ? idx : Math.max(idx + length, i);
-        } else {
-            length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1;
-        }
-      } else if (sortedIndex && idx && length) {
-        idx = sortedIndex(array, item);
-        return array[idx] === item ? idx : -1;
-      }
-      if (item !== item) {
-        idx = predicateFind(slice.call(array, i, length), _.isNaN);
-        return idx >= 0 ? idx + i : -1;
-      }
-      for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) {
-        if (array[idx] === item) return idx;
-      }
-      return -1;
-    };
-  }
-
-  // Return the position of the first occurrence of an item in an array,
-  // or -1 if the item is not included in the array.
-  // If the array is large and already in sort order, pass `true`
-  // for **isSorted** to use binary search.
-  _.indexOf = createIndexFinder(1, _.findIndex, _.sortedIndex);
-  _.lastIndexOf = createIndexFinder(-1, _.findLastIndex);
-
-  // Generate an integer Array containing an arithmetic progression. A port of
-  // the native Python `range()` function. See
-  // [the Python documentation](http://docs.python.org/library/functions.html#range).
-  _.range = function(start, stop, step) {
-    if (stop == null) {
-      stop = start || 0;
-      start = 0;
-    }
-    step = step || 1;
-
-    var length = Math.max(Math.ceil((stop - start) / step), 0);
-    var range = Array(length);
-
-    for (var idx = 0; idx < length; idx++, start += step) {
-      range[idx] = start;
-    }
-
-    return range;
-  };
-
-  // Function (ahem) Functions
-  // ------------------
-
-  // Determines whether to execute a function as a constructor
-  // or a normal function with the provided arguments
-  var executeBound = function(sourceFunc, boundFunc, context, callingContext, args) {
-    if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
-    var self = baseCreate(sourceFunc.prototype);
-    var result = sourceFunc.apply(self, args);
-    if (_.isObject(result)) return result;
-    return self;
-  };
-
-  // Create a function bound to a given object (assigning `this`, and arguments,
-  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
-  // available.
-  _.bind = function(func, context) {
-    if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
-    if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');
-    var args = slice.call(arguments, 2);
-    var bound = function() {
-      return executeBound(func, bound, context, this, args.concat(slice.call(arguments)));
-    };
-    return bound;
-  };
-
-  // Partially apply a function by creating a version that has had some of its
-  // arguments pre-filled, without changing its dynamic `this` context. _ acts
-  // as a placeholder, allowing any combination of arguments to be pre-filled.
-  _.partial = function(func) {
-    var boundArgs = slice.call(arguments, 1);
-    var bound = function() {
-      var position = 0, length = boundArgs.length;
-      var args = Array(length);
-      for (var i = 0; i < length; i++) {
-        args[i] = boundArgs[i] === _ ? arguments[position++] : boundArgs[i];
-      }
-      while (position < arguments.length) args.push(arguments[position++]);
-      return executeBound(func, bound, this, this, args);
-    };
-    return bound;
-  };
-
-  // Bind a number of an object's methods to that object. Remaining arguments
-  // are the method names to be bound. Useful for ensuring that all callbacks
-  // defined on an object belong to it.
-  _.bindAll = function(obj) {
-    var i, length = arguments.length, key;
-    if (length <= 1) throw new Error('bindAll must be passed function names');
-    for (i = 1; i < length; i++) {
-      key = arguments[i];
-      obj[key] = _.bind(obj[key], obj);
-    }
-    return obj;
-  };
-
-  // Memoize an expensive function by storing its results.
-  _.memoize = function(func, hasher) {
-    var memoize = function(key) {
-      var cache = memoize.cache;
-      var address = '' + (hasher ? hasher.apply(this, arguments) : key);
-      if (!_.has(cache, address)) cache[address] = func.apply(this, arguments);
-      return cache[address];
-    };
-    memoize.cache = {};
-    return memoize;
-  };
-
-  // Delays a function for the given number of milliseconds, and then calls
-  // it with the arguments supplied.
-  _.delay = function(func, wait) {
-    var args = slice.call(arguments, 2);
-    return setTimeout(function(){
-      return func.apply(null, args);
-    }, wait);
-  };
-
-  // Defers a function, scheduling it to run after the current call stack has
-  // cleared.
-  _.defer = _.partial(_.delay, _, 1);
-
-  // Returns a function, that, when invoked, will only be triggered at most once
-  // during a given window of time. Normally, the throttled function will run
-  // as much as it can, without ever going more than once per `wait` duration;
-  // but if you'd like to disable the execution on the leading edge, pass
-  // `{leading: false}`. To disable execution on the trailing edge, ditto.
-  _.throttle = function(func, wait, options) {
-    var context, args, result;
-    var timeout = null;
-    var previous = 0;
-    if (!options) options = {};
-    var later = function() {
-      previous = options.leading === false ? 0 : _.now();
-      timeout = null;
-      result = func.apply(context, args);
-      if (!timeout) context = args = null;
-    };
-    return function() {
-      var now = _.now();
-      if (!previous && options.leading === false) previous = now;
-      var remaining = wait - (now - previous);
-      context = this;
-      args = arguments;
-      if (remaining <= 0 || remaining > wait) {
-        if (timeout) {
-          clearTimeout(timeout);
-          timeout = null;
-        }
-        previous = now;
-        result = func.apply(context, args);
-        if (!timeout) context = args = null;
-      } else if (!timeout && options.trailing !== false) {
-        timeout = setTimeout(later, remaining);
-      }
-      return result;
-    };
-  };
-
-  // Returns a function, that, as long as it continues to be invoked, will not
-  // be triggered. The function will be called after it stops being called for
-  // N milliseconds. If `immediate` is passed, trigger the function on the
-  // leading edge, instead of the trailing.
-  _.debounce = function(func, wait, immediate) {
-    var timeout, args, context, timestamp, result;
-
-    var later = function() {
-      var last = _.now() - timestamp;
-
-      if (last < wait && last >= 0) {
-        timeout = setTimeout(later, wait - last);
-      } else {
-        timeout = null;
-        if (!immediate) {
-          result = func.apply(context, args);
-          if (!timeout) context = args = null;
-        }
-      }
-    };
-
-    return function() {
-      context = this;
-      args = arguments;
-      timestamp = _.now();
-      var callNow = immediate && !timeout;
-      if (!timeout) timeout = setTimeout(later, wait);
-      if (callNow) {
-        result = func.apply(context, args);
-        context = args = null;
-      }
-
-      return result;
-    };
-  };
-
-  // Returns the first function passed as an argument to the second,
-  // allowing you to adjust arguments, run code before and after, and
-  // conditionally execute the original function.
-  _.wrap = function(func, wrapper) {
-    return _.partial(wrapper, func);
-  };
-
-  // Returns a negated version of the passed-in predicate.
-  _.negate = function(predicate) {
-    return function() {
-      return !predicate.apply(this, arguments);
-    };
-  };
-
-  // Returns a function that is the composition of a list of functions, each
-  // consuming the return value of the function that follows.
-  _.compose = function() {
-    var args = arguments;
-    var start = args.length - 1;
-    return function() {
-      var i = start;
-      var result = args[start].apply(this, arguments);
-      while (i--) result = args[i].call(this, result);
-      return result;
-    };
-  };
-
-  // Returns a function that will only be executed on and after the Nth call.
-  _.after = function(times, func) {
-    return function() {
-      if (--times < 1) {
-        return func.apply(this, arguments);
-      }
-    };
-  };
-
-  // Returns a function that will only be executed up to (but not including) the Nth call.
-  _.before = function(times, func) {
-    var memo;
-    return function() {
-      if (--times > 0) {
-        memo = func.apply(this, arguments);
-      }
-      if (times <= 1) func = null;
-      return memo;
-    };
-  };
-
-  // Returns a function that will be executed at most one time, no matter how
-  // often you call it. Useful for lazy initialization.
-  _.once = _.partial(_.before, 2);
-
-  // Object Functions
-  // ----------------
-
-  // Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
-  var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
-  var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
-                      'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];
-
-  function collectNonEnumProps(obj, keys) {
-    var nonEnumIdx = nonEnumerableProps.length;
-    var constructor = obj.constructor;
-    var proto = (_.isFunction(constructor) && constructor.prototype) || ObjProto;
-
-    // Constructor is a special case.
-    var prop = 'constructor';
-    if (_.has(obj, prop) && !_.contains(keys, prop)) keys.push(prop);
-
-    while (nonEnumIdx--) {
-      prop = nonEnumerableProps[nonEnumIdx];
-      if (prop in obj && obj[prop] !== proto[prop] && !_.contains(keys, prop)) {
-        keys.push(prop);
-      }
-    }
-  }
-
-  // Retrieve the names of an object's own properties.
-  // Delegates to **ECMAScript 5**'s native `Object.keys`
-  _.keys = function(obj) {
-    if (!_.isObject(obj)) return [];
-    if (nativeKeys) return nativeKeys(obj);
-    var keys = [];
-    for (var key in obj) if (_.has(obj, key)) keys.push(key);
-    // Ahem, IE < 9.
-    if (hasEnumBug) collectNonEnumProps(obj, keys);
-    return keys;
-  };
-
-  // Retrieve all the property names of an object.
-  _.allKeys = function(obj) {
-    if (!_.isObject(obj)) return [];
-    var keys = [];
-    for (var key in obj) keys.push(key);
-    // Ahem, IE < 9.
-    if (hasEnumBug) collectNonEnumProps(obj, keys);
-    return keys;
-  };
-
-  // Retrieve the values of an object's properties.
-  _.values = function(obj) {
-    var keys = _.keys(obj);
-    var length = keys.length;
-    var values = Array(length);
-    for (var i = 0; i < length; i++) {
-      values[i] = obj[keys[i]];
-    }
-    return values;
-  };
-
-  // Returns the results of applying the iteratee to each element of the object
-  // In contrast to _.map it returns an object
-  _.mapObject = function(obj, iteratee, context) {
-    iteratee = cb(iteratee, context);
-    var keys =  _.keys(obj),
-          length = keys.length,
-          results = {},
-          currentKey;
-      for (var index = 0; index < length; index++) {
-        currentKey = keys[index];
-        results[currentKey] = iteratee(obj[currentKey], currentKey, obj);
-      }
-      return results;
-  };
-
-  // Convert an object into a list of `[key, value]` pairs.
-  _.pairs = function(obj) {
-    var keys = _.keys(obj);
-    var length = keys.length;
-    var pairs = Array(length);
-    for (var i = 0; i < length; i++) {
-      pairs[i] = [keys[i], obj[keys[i]]];
-    }
-    return pairs;
-  };
-
-  // Invert the keys and values of an object. The values must be serializable.
-  _.invert = function(obj) {
-    var result = {};
-    var keys = _.keys(obj);
-    for (var i = 0, length = keys.length; i < length; i++) {
-      result[obj[keys[i]]] = keys[i];
-    }
-    return result;
-  };
-
-  // Return a sorted list of the function names available on the object.
-  // Aliased as `methods`
-  _.functions = _.methods = function(obj) {
-    var names = [];
-    for (var key in obj) {
-      if (_.isFunction(obj[key])) names.push(key);
-    }
-    return names.sort();
-  };
-
-  // Extend a given object with all the properties in passed-in object(s).
-  _.extend = createAssigner(_.allKeys);
-
-  // Assigns a given object with all the own properties in the passed-in object(s)
-  // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
-  _.extendOwn = _.assign = createAssigner(_.keys);
-
-  // Returns the first key on an object that passes a predicate test
-  _.findKey = function(obj, predicate, context) {
-    predicate = cb(predicate, context);
-    var keys = _.keys(obj), key;
-    for (var i = 0, length = keys.length; i < length; i++) {
-      key = keys[i];
-      if (predicate(obj[key], key, obj)) return key;
-    }
-  };
-
-  // Return a copy of the object only containing the whitelisted properties.
-  _.pick = function(object, oiteratee, context) {
-    var result = {}, obj = object, iteratee, keys;
-    if (obj == null) return result;
-    if (_.isFunction(oiteratee)) {
-      keys = _.allKeys(obj);
-      iteratee = optimizeCb(oiteratee, context);
-    } else {
-      keys = flatten(arguments, false, false, 1);
-      iteratee = function(value, key, obj) { return key in obj; };
-      obj = Object(obj);
-    }
-    for (var i = 0, length = keys.length; i < length; i++) {
-      var key = keys[i];
-      var value = obj[key];
-      if (iteratee(value, key, obj)) result[key] = value;
-    }
-    return result;
-  };
-
-   // Return a copy of the object without the blacklisted properties.
-  _.omit = function(obj, iteratee, context) {
-    if (_.isFunction(iteratee)) {
-      iteratee = _.negate(iteratee);
-    } else {
-      var keys = _.map(flatten(arguments, false, false, 1), String);
-      iteratee = function(value, key) {
-        return !_.contains(keys, key);
-      };
-    }
-    return _.pick(obj, iteratee, context);
-  };
-
-  // Fill in a given object with default properties.
-  _.defaults = createAssigner(_.allKeys, true);
-
-  // Creates an object that inherits from the given prototype object.
-  // If additional properties are provided then they will be added to the
-  // created object.
-  _.create = function(prototype, props) {
-    var result = baseCreate(prototype);
-    if (props) _.extendOwn(result, props);
-    return result;
-  };
-
-  // Create a (shallow-cloned) duplicate of an object.
-  _.clone = function(obj) {
-    if (!_.isObject(obj)) return obj;
-    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
-  };
-
-  // Invokes interceptor with the obj, and then returns obj.
-  // The primary purpose of this method is to "tap into" a method chain, in
-  // order to perform operations on intermediate results within the chain.
-  _.tap = function(obj, interceptor) {
-    interceptor(obj);
-    return obj;
-  };
-
-  // Returns whether an object has a given set of `key:value` pairs.
-  _.isMatch = function(object, attrs) {
-    var keys = _.keys(attrs), length = keys.length;
-    if (object == null) return !length;
-    var obj = Object(object);
-    for (var i = 0; i < length; i++) {
-      var key = keys[i];
-      if (attrs[key] !== obj[key] || !(key in obj)) return false;
-    }
-    return true;
-  };
-
-
-  // Internal recursive comparison function for `isEqual`.
-  var eq = function(a, b, aStack, bStack) {
-    // Identical objects are equal. `0 === -0`, but they aren't identical.
-    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
-    if (a === b) return a !== 0 || 1 / a === 1 / b;
-    // A strict comparison is necessary because `null == undefined`.
-    if (a == null || b == null) return a === b;
-    // Unwrap any wrapped objects.
-    if (a instanceof _) a = a._wrapped;
-    if (b instanceof _) b = b._wrapped;
-    // Compare `[[Class]]` names.
-    var className = toString.call(a);
-    if (className !== toString.call(b)) return false;
-    switch (className) {
-      // Strings, numbers, regular expressions, dates, and booleans are compared by value.
-      case '[object RegExp]':
-      // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
-      case '[object String]':
-        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
-        // equivalent to `new String("5")`.
-        return '' + a === '' + b;
-      case '[object Number]':
-        // `NaN`s are equivalent, but non-reflexive.
-        // Object(NaN) is equivalent to NaN
-        if (+a !== +a) return +b !== +b;
-        // An `egal` comparison is performed for other numeric values.
-        return +a === 0 ? 1 / +a === 1 / b : +a === +b;
-      case '[object Date]':
-      case '[object Boolean]':
-        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
-        // millisecond representations. Note that invalid dates with millisecond representations
-        // of `NaN` are not equivalent.
-        return +a === +b;
-    }
-
-    var areArrays = className === '[object Array]';
-    if (!areArrays) {
-      if (typeof a != 'object' || typeof b != 'object') return false;
-
-      // Objects with different constructors are not equivalent, but `Object`s or `Array`s
-      // from different frames are.
-      var aCtor = a.constructor, bCtor = b.constructor;
-      if (aCtor !== bCtor && !(_.isFunction(aCtor) && aCtor instanceof aCtor &&
-                               _.isFunction(bCtor) && bCtor instanceof bCtor)
-                          && ('constructor' in a && 'constructor' in b)) {
-        return false;
-      }
-    }
-    // Assume equality for cyclic structures. The algorithm for detecting cyclic
-    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
-
-    // Initializing stack of traversed objects.
-    // It's done here since we only need them for objects and arrays comparison.
-    aStack = aStack || [];
-    bStack = bStack || [];
-    var length = aStack.length;
-    while (length--) {
-      // Linear search. Performance is inversely proportional to the number of
-      // unique nested structures.
-      if (aStack[length] === a) return bStack[length] === b;
-    }
-
-    // Add the first object to the stack of traversed objects.
-    aStack.push(a);
-    bStack.push(b);
-
-    // Recursively compare objects and arrays.
-    if (areArrays) {
-      // Compare array lengths to determine if a deep comparison is necessary.
-      length = a.length;
-      if (length !== b.length) return false;
-      // Deep compare the contents, ignoring non-numeric properties.
-      while (length--) {
-        if (!eq(a[length], b[length], aStack, bStack)) return false;
-      }
-    } else {
-      // Deep compare objects.
-      var keys = _.keys(a), key;
-      length = keys.length;
-      // Ensure that both objects contain the same number of properties before comparing deep equality.
-      if (_.keys(b).length !== length) return false;
-      while (length--) {
-        // Deep compare each member
-        key = keys[length];
-        if (!(_.has(b, key) && eq(a[key], b[key], aStack, bStack))) return false;
-      }
-    }
-    // Remove the first object from the stack of traversed objects.
-    aStack.pop();
-    bStack.pop();
-    return true;
-  };
-
-  // Perform a deep comparison to check if two objects are equal.
-  _.isEqual = function(a, b) {
-    return eq(a, b);
-  };
-
-  // Is a given array, string, or object empty?
-  // An "empty" object has no enumerable own-properties.
-  _.isEmpty = function(obj) {
-    if (obj == null) return true;
-    if (isArrayLike(obj) && (_.isArray(obj) || _.isString(obj) || _.isArguments(obj))) return obj.length === 0;
-    return _.keys(obj).length === 0;
-  };
-
-  // Is a given value a DOM element?
-  _.isElement = function(obj) {
-    return !!(obj && obj.nodeType === 1);
-  };
-
-  // Is a given value an array?
-  // Delegates to ECMA5's native Array.isArray
-  _.isArray = nativeIsArray || function(obj) {
-    return toString.call(obj) === '[object Array]';
-  };
-
-  // Is a given variable an object?
-  _.isObject = function(obj) {
-    var type = typeof obj;
-    return type === 'function' || type === 'object' && !!obj;
-  };
-
-  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp, isError.
-  _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error'], function(name) {
-    _['is' + name] = function(obj) {
-      return toString.call(obj) === '[object ' + name + ']';
-    };
-  });
-
-  // Define a fallback version of the method in browsers (ahem, IE < 9), where
-  // there isn't any inspectable "Arguments" type.
-  if (!_.isArguments(arguments)) {
-    _.isArguments = function(obj) {
-      return _.has(obj, 'callee');
-    };
-  }
-
-  // Optimize `isFunction` if appropriate. Work around some typeof bugs in old v8,
-  // IE 11 (#1621), and in Safari 8 (#1929).
-  if (typeof /./ != 'function' && typeof Int8Array != 'object') {
-    _.isFunction = function(obj) {
-      return typeof obj == 'function' || false;
-    };
-  }
-
-  // Is a given object a finite number?
-  _.isFinite = function(obj) {
-    return isFinite(obj) && !isNaN(parseFloat(obj));
-  };
-
-  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
-  _.isNaN = function(obj) {
-    return _.isNumber(obj) && obj !== +obj;
-  };
-
-  // Is a given value a boolean?
-  _.isBoolean = function(obj) {
-    return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
-  };
-
-  // Is a given value equal to null?
-  _.isNull = function(obj) {
-    return obj === null;
-  };
-
-  // Is a given variable undefined?
-  _.isUndefined = function(obj) {
-    return obj === void 0;
-  };
-
-  // Shortcut function for checking if an object has a given property directly
-  // on itself (in other words, not on a prototype).
-  _.has = function(obj, key) {
-    return obj != null && hasOwnProperty.call(obj, key);
-  };
-
-  // Utility Functions
-  // -----------------
-
-  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
-  // previous owner. Returns a reference to the Underscore object.
-  _.noConflict = function() {
-    root._ = previousUnderscore;
-    return this;
-  };
-
-  // Keep the identity function around for default iteratees.
-  _.identity = function(value) {
-    return value;
-  };
-
-  // Predicate-generating functions. Often useful outside of Underscore.
-  _.constant = function(value) {
-    return function() {
-      return value;
-    };
-  };
-
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@@ -4507,976 +2964,16 @@ d.push(e),this.push(this.source.functionCall("container.invokePartial","",d))},a
 }));
 
 /*!
- * @overview es6-promise - a tiny implementation of Promises/A+.
- * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
- * @license   Licensed under MIT license
- *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
- * @version   2.3.0
+ * https://github.com/paulmillr/es6-shim
+ * @license es6-shim Copyright 2013-2016 by Paul Miller (http://paulmillr.com)
+ *   and contributors,  MIT License
+ * es6-shim: v0.35.4
+ * see https://github.com/paulmillr/es6-shim/blob/0.35.3/LICENSE
+ * Details and documentation:
+ * https://github.com/paulmillr/es6-shim/
  */
-
-(function() {
-    "use strict";
-    function lib$es6$promise$utils$$objectOrFunction(x) {
-      return typeof x === 'function' || (typeof x === 'object' && x !== null);
-    }
-
-    function lib$es6$promise$utils$$isFunction(x) {
-      return typeof x === 'function';
-    }
-
-    function lib$es6$promise$utils$$isMaybeThenable(x) {
-      return typeof x === 'object' && x !== null;
-    }
-
-    var lib$es6$promise$utils$$_isArray;
-    if (!Array.isArray) {
-      lib$es6$promise$utils$$_isArray = function (x) {
-        return Object.prototype.toString.call(x) === '[object Array]';
-      };
-    } else {
-      lib$es6$promise$utils$$_isArray = Array.isArray;
-    }
-
-    var lib$es6$promise$utils$$isArray = lib$es6$promise$utils$$_isArray;
-    var lib$es6$promise$asap$$len = 0;
-    var lib$es6$promise$asap$$toString = {}.toString;
-    var lib$es6$promise$asap$$vertxNext;
-    var lib$es6$promise$asap$$customSchedulerFn;
-
-    var lib$es6$promise$asap$$asap = function asap(callback, arg) {
-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len] = callback;
-      lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len + 1] = arg;
-      lib$es6$promise$asap$$len += 2;
-      if (lib$es6$promise$asap$$len === 2) {
-        // If len is 2, that means that we need to schedule an async flush.
-        // If additional callbacks are queued before the queue is flushed, they
-        // will be processed by this flush that we are scheduling.
-        if (lib$es6$promise$asap$$customSchedulerFn) {
-          lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush);
-        } else {
-          lib$es6$promise$asap$$scheduleFlush();
-        }
-      }
-    }
-
-    function lib$es6$promise$asap$$setScheduler(scheduleFn) {
-      lib$es6$promise$asap$$customSchedulerFn = scheduleFn;
-    }
-
-    function lib$es6$promise$asap$$setAsap(asapFn) {
-      lib$es6$promise$asap$$asap = asapFn;
-    }
-
-    var lib$es6$promise$asap$$browserWindow = (typeof window !== 'undefined') ? window : undefined;
-    var lib$es6$promise$asap$$browserGlobal = lib$es6$promise$asap$$browserWindow || {};
-    var lib$es6$promise$asap$$BrowserMutationObserver = lib$es6$promise$asap$$browserGlobal.MutationObserver || lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;
-    var lib$es6$promise$asap$$isNode = typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
-
-    // test for web worker but not in IE10
-    var lib$es6$promise$asap$$isWorker = typeof Uint8ClampedArray !== 'undefined' &&
-      typeof importScripts !== 'undefined' &&
-      typeof MessageChannel !== 'undefined';
-
-    // node
-    function lib$es6$promise$asap$$useNextTick() {
-      var nextTick = process.nextTick;
-      // node version 0.10.x displays a deprecation warning when nextTick is used recursively
-      // setImmediate should be used instead instead
-      var version = process.versions.node.match(/^(?:(\d+)\.)?(?:(\d+)\.)?(\*|\d+)$/);
-      if (Array.isArray(version) && version[1] === '0' && version[2] === '10') {
-        nextTick = setImmediate;
-      }
-      return function() {
-        nextTick(lib$es6$promise$asap$$flush);
-      };
-    }
-
-    // vertx
-    function lib$es6$promise$asap$$useVertxTimer() {
-      return function() {
-        lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush);
-      };
-    }
-
-    function lib$es6$promise$asap$$useMutationObserver() {
-      var iterations = 0;
-      var observer = new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);
-      var node = document.createTextNode('');
-      observer.observe(node, { characterData: true });
-
-      return function() {
-        node.data = (iterations = ++iterations % 2);
-      };
-    }
-
-    // web worker
-    function lib$es6$promise$asap$$useMessageChannel() {
-      var channel = new MessageChannel();
-      channel.port1.onmessage = lib$es6$promise$asap$$flush;
-      return function () {
-        channel.port2.postMessage(0);
-      };
-    }
-
-    function lib$es6$promise$asap$$useSetTimeout() {
-      return function() {
-        setTimeout(lib$es6$promise$asap$$flush, 1);
-      };
-    }
-
-    var lib$es6$promise$asap$$queue = new Array(1000);
-    function lib$es6$promise$asap$$flush() {
-      for (var i = 0; i < lib$es6$promise$asap$$len; i+=2) {
-        var callback = lib$es6$promise$asap$$queue[i];
-        var arg = lib$es6$promise$asap$$queue[i+1];
-
-        callback(arg);
-
-        lib$es6$promise$asap$$queue[i] = undefined;
-        lib$es6$promise$asap$$queue[i+1] = undefined;
-      }
-
-      lib$es6$promise$asap$$len = 0;
-    }
-
-    function lib$es6$promise$asap$$attemptVertex() {
-      try {
-        var r = require;
-        var vertx = r('vertx');
-        lib$es6$promise$asap$$vertxNext = vertx.runOnLoop || vertx.runOnContext;
-        return lib$es6$promise$asap$$useVertxTimer();
-      } catch(e) {
-        return lib$es6$promise$asap$$useSetTimeout();
-      }
-    }
-
-    var lib$es6$promise$asap$$scheduleFlush;
-    // Decide what async method to use to triggering processing of queued callbacks:
-    if (lib$es6$promise$asap$$isNode) {
-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useNextTick();
-    } else if (lib$es6$promise$asap$$BrowserMutationObserver) {
-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMutationObserver();
-    } else if (lib$es6$promise$asap$$isWorker) {
-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useMessageChannel();
-    } else if (lib$es6$promise$asap$$browserWindow === undefined && typeof require === 'function') {
-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$attemptVertex();
-    } else {
-      lib$es6$promise$asap$$scheduleFlush = lib$es6$promise$asap$$useSetTimeout();
-    }
-
-    function lib$es6$promise$$internal$$noop() {}
-
-    var lib$es6$promise$$internal$$PENDING   = void 0;
-    var lib$es6$promise$$internal$$FULFILLED = 1;
-    var lib$es6$promise$$internal$$REJECTED  = 2;
-
-    var lib$es6$promise$$internal$$GET_THEN_ERROR = new lib$es6$promise$$internal$$ErrorObject();
-
-    function lib$es6$promise$$internal$$selfFullfillment() {
-      return new TypeError("You cannot resolve a promise with itself");
-    }
-
-    function lib$es6$promise$$internal$$cannotReturnOwn() {
-      return new TypeError('A promises callback cannot return that same promise.');
-    }
-
-    function lib$es6$promise$$internal$$getThen(promise) {
-      try {
-        return promise.then;
-      } catch(error) {
-        lib$es6$promise$$internal$$GET_THEN_ERROR.error = error;
-        return lib$es6$promise$$internal$$GET_THEN_ERROR;
-      }
-    }
-
-    function lib$es6$promise$$internal$$tryThen(then, value, fulfillmentHandler, rejectionHandler) {
-      try {
-        then.call(value, fulfillmentHandler, rejectionHandler);
-      } catch(e) {
-        return e;
-      }
-    }
-
-    function lib$es6$promise$$internal$$handleForeignThenable(promise, thenable, then) {
-       lib$es6$promise$asap$$asap(function(promise) {
-        var sealed = false;
-        var error = lib$es6$promise$$internal$$tryThen(then, thenable, function(value) {
-          if (sealed) { return; }
-          sealed = true;
-          if (thenable !== value) {
-            lib$es6$promise$$internal$$resolve(promise, value);
-          } else {
-            lib$es6$promise$$internal$$fulfill(promise, value);
-          }
-        }, function(reason) {
-          if (sealed) { return; }
-          sealed = true;
-
-          lib$es6$promise$$internal$$reject(promise, reason);
-        }, 'Settle: ' + (promise._label || ' unknown promise'));
-
-        if (!sealed && error) {
-          sealed = true;
-          lib$es6$promise$$internal$$reject(promise, error);
-        }
-      }, promise);
-    }
-
-    function lib$es6$promise$$internal$$handleOwnThenable(promise, thenable) {
-      if (thenable._state === lib$es6$promise$$internal$$FULFILLED) {
-        lib$es6$promise$$internal$$fulfill(promise, thenable._result);
-      } else if (thenable._state === lib$es6$promise$$internal$$REJECTED) {
-        lib$es6$promise$$internal$$reject(promise, thenable._result);
-      } else {
-        lib$es6$promise$$internal$$subscribe(thenable, undefined, function(value) {
-          lib$es6$promise$$internal$$resolve(promise, value);
-        }, function(reason) {
-          lib$es6$promise$$internal$$reject(promise, reason);
-        });
-      }
-    }
-
-    function lib$es6$promise$$internal$$handleMaybeThenable(promise, maybeThenable) {
-      if (maybeThenable.constructor === promise.constructor) {
-        lib$es6$promise$$internal$$handleOwnThenable(promise, maybeThenable);
-      } else {
-        var then = lib$es6$promise$$internal$$getThen(maybeThenable);
-
-        if (then === lib$es6$promise$$internal$$GET_THEN_ERROR) {
-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$GET_THEN_ERROR.error);
-        } else if (then === undefined) {
-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
-        } else if (lib$es6$promise$utils$$isFunction(then)) {
-          lib$es6$promise$$internal$$handleForeignThenable(promise, maybeThenable, then);
-        } else {
-          lib$es6$promise$$internal$$fulfill(promise, maybeThenable);
-        }
-      }
-    }
-
-    function lib$es6$promise$$internal$$resolve(promise, value) {
-      if (promise === value) {
-        lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$selfFullfillment());
-      } else if (lib$es6$promise$utils$$objectOrFunction(value)) {
-        lib$es6$promise$$internal$$handleMaybeThenable(promise, value);
-      } else {
-        lib$es6$promise$$internal$$fulfill(promise, value);
-      }
-    }
-
-    function lib$es6$promise$$internal$$publishRejection(promise) {
-      if (promise._onerror) {
-        promise._onerror(promise._result);
-      }
-
-      lib$es6$promise$$internal$$publish(promise);
-    }
-
-    function lib$es6$promise$$internal$$fulfill(promise, value) {
-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
-
-      promise._result = value;
-      promise._state = lib$es6$promise$$internal$$FULFILLED;
-
-      if (promise._subscribers.length !== 0) {
-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, promise);
-      }
-    }
-
-    function lib$es6$promise$$internal$$reject(promise, reason) {
-      if (promise._state !== lib$es6$promise$$internal$$PENDING) { return; }
-      promise._state = lib$es6$promise$$internal$$REJECTED;
-      promise._result = reason;
-
-      lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection, promise);
-    }
-
-    function lib$es6$promise$$internal$$subscribe(parent, child, onFulfillment, onRejection) {
-      var subscribers = parent._subscribers;
-      var length = subscribers.length;
-
-      parent._onerror = null;
-
-      subscribers[length] = child;
-      subscribers[length + lib$es6$promise$$internal$$FULFILLED] = onFulfillment;
-      subscribers[length + lib$es6$promise$$internal$$REJECTED]  = onRejection;
-
-      if (length === 0 && parent._state) {
-        lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish, parent);
-      }
-    }
-
-    function lib$es6$promise$$internal$$publish(promise) {
-      var subscribers = promise._subscribers;
-      var settled = promise._state;
-
-      if (subscribers.length === 0) { return; }
-
-      var child, callback, detail = promise._result;
-
-      for (var i = 0; i < subscribers.length; i += 3) {
-        child = subscribers[i];
-        callback = subscribers[i + settled];
-
-        if (child) {
-          lib$es6$promise$$internal$$invokeCallback(settled, child, callback, detail);
-        } else {
-          callback(detail);
-        }
-      }
-
-      promise._subscribers.length = 0;
-    }
-
-    function lib$es6$promise$$internal$$ErrorObject() {
-      this.error = null;
-    }
-
-    var lib$es6$promise$$internal$$TRY_CATCH_ERROR = new lib$es6$promise$$internal$$ErrorObject();
-
-    function lib$es6$promise$$internal$$tryCatch(callback, detail) {
-      try {
-        return callback(detail);
-      } catch(e) {
-        lib$es6$promise$$internal$$TRY_CATCH_ERROR.error = e;
-        return lib$es6$promise$$internal$$TRY_CATCH_ERROR;
-      }
-    }
-
-    function lib$es6$promise$$internal$$invokeCallback(settled, promise, callback, detail) {
-      var hasCallback = lib$es6$promise$utils$$isFunction(callback),
-          value, error, succeeded, failed;
-
-      if (hasCallback) {
-        value = lib$es6$promise$$internal$$tryCatch(callback, detail);
-
-        if (value === lib$es6$promise$$internal$$TRY_CATCH_ERROR) {
-          failed = true;
-          error = value.error;
-          value = null;
-        } else {
-          succeeded = true;
-        }
-
-        if (promise === value) {
-          lib$es6$promise$$internal$$reject(promise, lib$es6$promise$$internal$$cannotReturnOwn());
-          return;
-        }
-
-      } else {
-        value = detail;
-        succeeded = true;
-      }
-
-      if (promise._state !== lib$es6$promise$$internal$$PENDING) {
-        // noop
-      } else if (hasCallback && succeeded) {
-        lib$es6$promise$$internal$$resolve(promise, value);
-      } else if (failed) {
-        lib$es6$promise$$internal$$reject(promise, error);
-      } else if (settled === lib$es6$promise$$internal$$FULFILLED) {
-        lib$es6$promise$$internal$$fulfill(promise, value);
-      } else if (settled === lib$es6$promise$$internal$$REJECTED) {
-        lib$es6$promise$$internal$$reject(promise, value);
-      }
-    }
-
-    function lib$es6$promise$$internal$$initializePromise(promise, resolver) {
-      try {
-        resolver(function resolvePromise(value){
-          lib$es6$promise$$internal$$resolve(promise, value);
-        }, function rejectPromise(reason) {
-          lib$es6$promise$$internal$$reject(promise, reason);
-        });
-      } catch(e) {
-        lib$es6$promise$$internal$$reject(promise, e);
-      }
-    }
-
-    function lib$es6$promise$enumerator$$Enumerator(Constructor, input) {
-      var enumerator = this;
-
-      enumerator._instanceConstructor = Constructor;
-      enumerator.promise = new Constructor(lib$es6$promise$$internal$$noop);
-
-      if (enumerator._validateInput(input)) {
-        enumerator._input     = input;
-        enumerator.length     = input.length;
-        enumerator._remaining = input.length;
-
-        enumerator._init();
-
-        if (enumerator.length === 0) {
-          lib$es6$promise$$internal$$fulfill(enumerator.promise, enumerator._result);
-        } else {
-          enumerator.length = enumerator.length || 0;
-          enumerator._enumerate();
-          if (enumerator._remaining === 0) {
-            lib$es6$promise$$internal$$fulfill(enumerator.promise, enumerator._result);
-          }
-        }
-      } else {
-        lib$es6$promise$$internal$$reject(enumerator.promise, enumerator._validationError());
-      }
-    }
-
-    lib$es6$promise$enumerator$$Enumerator.prototype._validateInput = function(input) {
-      return lib$es6$promise$utils$$isArray(input);
-    };
-
-    lib$es6$promise$enumerator$$Enumerator.prototype._validationError = function() {
-      return new Error('Array Methods must be provided an Array');
-    };
-
-    lib$es6$promise$enumerator$$Enumerator.prototype._init = function() {
-      this._result = new Array(this.length);
-    };
-
-    var lib$es6$promise$enumerator$$default = lib$es6$promise$enumerator$$Enumerator;
-
-    lib$es6$promise$enumerator$$Enumerator.prototype._enumerate = function() {
-      var enumerator = this;
-
-      var length  = enumerator.length;
-      var promise = enumerator.promise;
-      var input   = enumerator._input;
-
-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
-        enumerator._eachEntry(input[i], i);
-      }
-    };
-
-    lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry = function(entry, i) {
-      var enumerator = this;
-      var c = enumerator._instanceConstructor;
-
-      if (lib$es6$promise$utils$$isMaybeThenable(entry)) {
-        if (entry.constructor === c && entry._state !== lib$es6$promise$$internal$$PENDING) {
-          entry._onerror = null;
-          enumerator._settledAt(entry._state, i, entry._result);
-        } else {
-          enumerator._willSettleAt(c.resolve(entry), i);
-        }
-      } else {
-        enumerator._remaining--;
-        enumerator._result[i] = entry;
-      }
-    };
-
-    lib$es6$promise$enumerator$$Enumerator.prototype._settledAt = function(state, i, value) {
-      var enumerator = this;
-      var promise = enumerator.promise;
-
-      if (promise._state === lib$es6$promise$$internal$$PENDING) {
-        enumerator._remaining--;
-
-        if (state === lib$es6$promise$$internal$$REJECTED) {
-          lib$es6$promise$$internal$$reject(promise, value);
-        } else {
-          enumerator._result[i] = value;
-        }
-      }
-
-      if (enumerator._remaining === 0) {
-        lib$es6$promise$$internal$$fulfill(promise, enumerator._result);
-      }
-    };
-
-    lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt = function(promise, i) {
-      var enumerator = this;
-
-      lib$es6$promise$$internal$$subscribe(promise, undefined, function(value) {
-        enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED, i, value);
-      }, function(reason) {
-        enumerator._settledAt(lib$es6$promise$$internal$$REJECTED, i, reason);
-      });
-    };
-    function lib$es6$promise$promise$all$$all(entries) {
-      return new lib$es6$promise$enumerator$$default(this, entries).promise;
-    }
-    var lib$es6$promise$promise$all$$default = lib$es6$promise$promise$all$$all;
-    function lib$es6$promise$promise$race$$race(entries) {
-      /*jshint validthis:true */
-      var Constructor = this;
-
-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
-
-      if (!lib$es6$promise$utils$$isArray(entries)) {
-        lib$es6$promise$$internal$$reject(promise, new TypeError('You must pass an array to race.'));
-        return promise;
-      }
-
-      var length = entries.length;
-
-      function onFulfillment(value) {
-        lib$es6$promise$$internal$$resolve(promise, value);
-      }
-
-      function onRejection(reason) {
-        lib$es6$promise$$internal$$reject(promise, reason);
-      }
-
-      for (var i = 0; promise._state === lib$es6$promise$$internal$$PENDING && i < length; i++) {
-        lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]), undefined, onFulfillment, onRejection);
-      }
-
-      return promise;
-    }
-    var lib$es6$promise$promise$race$$default = lib$es6$promise$promise$race$$race;
-    function lib$es6$promise$promise$resolve$$resolve(object) {
-      /*jshint validthis:true */
-      var Constructor = this;
-
-      if (object && typeof object === 'object' && object.constructor === Constructor) {
-        return object;
-      }
-
-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
-      lib$es6$promise$$internal$$resolve(promise, object);
-      return promise;
-    }
-    var lib$es6$promise$promise$resolve$$default = lib$es6$promise$promise$resolve$$resolve;
-    function lib$es6$promise$promise$reject$$reject(reason) {
-      /*jshint validthis:true */
-      var Constructor = this;
-      var promise = new Constructor(lib$es6$promise$$internal$$noop);
-      lib$es6$promise$$internal$$reject(promise, reason);
-      return promise;
-    }
-    var lib$es6$promise$promise$reject$$default = lib$es6$promise$promise$reject$$reject;
-
-    var lib$es6$promise$promise$$counter = 0;
-
-    function lib$es6$promise$promise$$needsResolver() {
-      throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
-    }
-
-    function lib$es6$promise$promise$$needsNew() {
-      throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
-    }
-
-    var lib$es6$promise$promise$$default = lib$es6$promise$promise$$Promise;
-    /**
-      Promise objects represent the eventual result of an asynchronous operation. The
-      primary way of interacting with a promise is through its `then` method, which
-      registers callbacks to receive either a promise's eventual value or the reason
-      why the promise cannot be fulfilled.
-
-      Terminology
-      -----------
-
-      - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
-      - `thenable` is an object or function that defines a `then` method.
-      - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
-      - `exception` is a value that is thrown using the throw statement.
-      - `reason` is a value that indicates why a promise was rejected.
-      - `settled` the final resting state of a promise, fulfilled or rejected.
-
-      A promise can be in one of three states: pending, fulfilled, or rejected.
-
-      Promises that are fulfilled have a fulfillment value and are in the fulfilled
-      state.  Promises that are rejected have a rejection reason and are in the
-      rejected state.  A fulfillment value is never a thenable.
-
-      Promises can also be said to *resolve* a value.  If this value is also a
-      promise, then the original promise's settled state will match the value's
-      settled state.  So a promise that *resolves* a promise that rejects will
-      itself reject, and a promise that *resolves* a promise that fulfills will
-      itself fulfill.
-
-
-      Basic Usage:
-      ------------
-
-      ```js
-      var promise = new Promise(function(resolve, reject) {
-        // on success
-        resolve(value);
-
-        // on failure
-        reject(reason);
-      });
-
-      promise.then(function(value) {
-        // on fulfillment
-      }, function(reason) {
-        // on rejection
-      });
-      ```
-
-      Advanced Usage:
-      ---------------
-
-      Promises shine when abstracting away asynchronous interactions such as
-      `XMLHttpRequest`s.
-
-      ```js
-      function getJSON(url) {
-        return new Promise(function(resolve, reject){
-          var xhr = new XMLHttpRequest();
-
-          xhr.open('GET', url);
-          xhr.onreadystatechange = handler;
-          xhr.responseType = 'json';
-          xhr.setRequestHeader('Accept', 'application/json');
-          xhr.send();
-
-          function handler() {
-            if (this.readyState === this.DONE) {
-              if (this.status === 200) {
-                resolve(this.response);
-              } else {
-                reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
-              }
-            }
-          };
-        });
-      }
-
-      getJSON('/posts.json').then(function(json) {
-        // on fulfillment
-      }, function(reason) {
-        // on rejection
-      });
-      ```
-
-      Unlike callbacks, promises are great composable primitives.
-
-      ```js
-      Promise.all([
-        getJSON('/posts'),
-        getJSON('/comments')
-      ]).then(function(values){
-        values[0] // => postsJSON
-        values[1] // => commentsJSON
-
-        return values;
-      });
-      ```
-
-      @class Promise
-      @param {function} resolver
-      Useful for tooling.
-      @constructor
-    */
-    function lib$es6$promise$promise$$Promise(resolver) {
-      this._id = lib$es6$promise$promise$$counter++;
-      this._state = undefined;
-      this._result = undefined;
-      this._subscribers = [];
-
-      if (lib$es6$promise$$internal$$noop !== resolver) {
-        if (!lib$es6$promise$utils$$isFunction(resolver)) {
-          lib$es6$promise$promise$$needsResolver();
-        }
-
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-    /**
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-      ```
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-      Chaining
-      --------
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-      ```js
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-      ```js
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-        throw new PedagogicalException('Upstream error');
-      }).then(function (value) {
-        // never reached
-      }).then(function (value) {
-        // never reached
-      }, function (reason) {
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-      Simple Example
-      --------------
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-      Synchronous Example
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-      ```javascript
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-        // success
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-        // failure
-      }
-      ```
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-      Errback Example
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-      ```js
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-        if (err) {
-          // failure
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-          // success
-        }
-      });
-      ```
-
-      Promise Example;
-
-      ```javascript
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-        // success
-      }, function(reason){
-        // failure
-      });
-      ```
-
-      Advanced Example
-      --------------
-
-      Synchronous Example
-
-      ```javascript
-      var author, books;
-
-      try {
-        author = findAuthor();
-        books  = findBooksByAuthor(author);
-        // success
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-        // failure
-      }
-      ```
-
-      Errback Example
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-      ```js
-
-      function foundBooks(books) {
-
-      }
-
-      function failure(reason) {
-
-      }
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-      findAuthor(function(author, err){
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-          // success
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-      });
-      ```
-
-      Promise Example;
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-      ```javascript
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-          // found books
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-        // something went wrong
-      });
-      ```
-
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-      ```js
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-      // synchronous
-      try {
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-      } catch(reason) {
-        // something went wrong
-      }
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-      // async with promises
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-      @method catch
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-    */
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 /*
diff --git a/core/vendor/es6-shim/.bower.json b/core/vendor/es6-shim/.bower.json
new file mode 100644
index 00000000000..dcb090a81ff
--- /dev/null
+++ b/core/vendor/es6-shim/.bower.json
@@ -0,0 +1,40 @@
+{
+  "name": "es6-shim",
+  "repo": "paulmillr/es6-shim",
+  "description": "ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines",
+  "keywords": [
+    "ecmascript",
+    "harmony",
+    "es6",
+    "shim",
+    "promise",
+    "promises",
+    "setPrototypeOf",
+    "map",
+    "set",
+    "__proto__"
+  ],
+  "main": "es6-shim.js",
+  "scripts": [
+    "es6-shim.js"
+  ],
+  "dependencies": {},
+  "development": {},
+  "ignore": [
+    "**/.*",
+    "node_modules",
+    "components",
+    "test"
+  ],
+  "homepage": "https://github.com/paulmillr/es6-shim",
+  "version": "0.35.4",
+  "_release": "0.35.4",
+  "_resolution": {
+    "type": "version",
+    "tag": "0.35.4",
+    "commit": "271142ca5c58b7bfec6970b1c070515da0d8ef98"
+  },
+  "_source": "https://github.com/paulmillr/es6-shim.git",
+  "_target": "^0.35.4",
+  "_originalSource": "es6-shim"
+}
\ No newline at end of file
diff --git a/core/vendor/es6-shim/LICENSE b/core/vendor/es6-shim/LICENSE
new file mode 100644
index 00000000000..996ec8d6f76
--- /dev/null
+++ b/core/vendor/es6-shim/LICENSE
@@ -0,0 +1,26 @@
+The project was initially based on [es6-shim by Axel Rauschmayer](https://github.com/rauschma/es6-shim).
+
+Current maintainers are: [Paul Miller](http://paulmillr.com), [Jordan Harband](https://github.com/ljharb), and [C. Scott Ananian](http://cscott.net).
+
+The MIT License (MIT)
+
+Copyright (c) 2013-2016 Paul Miller (http://paulmillr.com) and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
diff --git a/core/vendor/es6-shim/es6-shim.min.js b/core/vendor/es6-shim/es6-shim.min.js
new file mode 100644
index 00000000000..aac1e6e3e7a
--- /dev/null
+++ b/core/vendor/es6-shim/es6-shim.min.js
@@ -0,0 +1,12 @@
+/*!
+ * https://github.com/paulmillr/es6-shim
+ * @license es6-shim Copyright 2013-2016 by Paul Miller (http://paulmillr.com)
+ *   and contributors,  MIT License
+ * es6-shim: v0.35.4
+ * see https://github.com/paulmillr/es6-shim/blob/0.35.3/LICENSE
+ * Details and documentation:
+ * https://github.com/paulmillr/es6-shim/
+ */
+(function(e,t){if(typeof define==="function"&&define.amd){define(t)}else if(typeof exports==="object"){module.exports=t()}else{e.returnExports=t()}})(this,function(){"use strict";var e=Function.call.bind(Function.apply);var t=Function.call.bind(Function.call);var r=Array.isArray;var n=Object.keys;var o=function notThunker(t){return function notThunk(){return!e(t,this,arguments)}};var i=function(e){try{e();return false}catch(t){return true}};var a=function valueOrFalseIfThrows(e){try{return e()}catch(t){return false}};var u=o(i);var f=function(){return!i(function(){return Object.defineProperty({},"x",{get:function(){}})})};var s=!!Object.defineProperty&&f();var c=function foo(){}.name==="foo";var l=Function.call.bind(Array.prototype.forEach);var p=Function.call.bind(Array.prototype.reduce);var v=Function.call.bind(Array.prototype.filter);var y=Function.call.bind(Array.prototype.some);var h=function(e,t,r,n){if(!n&&t in 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diff --git a/core/vendor/underscore/underscore-min.js b/core/vendor/underscore/underscore-min.js
new file mode 100644
index 00000000000..f01025b7bca
--- /dev/null
+++ b/core/vendor/underscore/underscore-min.js
@@ -0,0 +1,6 @@
+//     Underscore.js 1.8.3
+//     http://underscorejs.org
+//     (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+//     Underscore may be freely distributed under the MIT license.
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-//     Underscore.js 1.8.3
-//     http://underscorejs.org
-//     (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
-//     Underscore may be freely distributed under the MIT license.
-
-(function() {
-
-  // Baseline setup
-  // --------------
-
-  // Establish the root object, `window` in the browser, or `exports` on the server.
-  var root = this;
-
-  // Save the previous value of the `_` variable.
-  var previousUnderscore = root._;
-
-  // Save bytes in the minified (but not gzipped) version:
-  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
-
-  // Create quick reference variables for speed access to core prototypes.
-  var
-    push             = ArrayProto.push,
-    slice            = ArrayProto.slice,
-    toString         = ObjProto.toString,
-    hasOwnProperty   = ObjProto.hasOwnProperty;
-
-  // All **ECMAScript 5** native function implementations that we hope to use
-  // are declared here.
-  var
-    nativeIsArray      = Array.isArray,
-    nativeKeys         = Object.keys,
-    nativeBind         = FuncProto.bind,
-    nativeCreate       = Object.create;
-
-  // Naked function reference for surrogate-prototype-swapping.
-  var Ctor = function(){};
-
-  // Create a safe reference to the Underscore object for use below.
-  var _ = function(obj) {
-    if (obj instanceof _) return obj;
-    if (!(this instanceof _)) return new _(obj);
-    this._wrapped = obj;
-  };
-
-  // Export the Underscore object for **Node.js**, with
-  // backwards-compatibility for the old `require()` API. If we're in
-  // the browser, add `_` as a global object.
-  if (typeof exports !== 'undefined') {
-    if (typeof module !== 'undefined' && module.exports) {
-      exports = module.exports = _;
-    }
-    exports._ = _;
-  } else {
-    root._ = _;
-  }
-
-  // Current version.
-  _.VERSION = '1.8.3';
-
-  // Internal function that returns an efficient (for current engines) version
-  // of the passed-in callback, to be repeatedly applied in other Underscore
-  // functions.
-  var optimizeCb = function(func, context, argCount) {
-    if (context === void 0) return func;
-    switch (argCount == null ? 3 : argCount) {
-      case 1: return function(value) {
-        return func.call(context, value);
-      };
-      case 2: return function(value, other) {
-        return func.call(context, value, other);
-      };
-      case 3: return function(value, index, collection) {
-        return func.call(context, value, index, collection);
-      };
-      case 4: return function(accumulator, value, index, collection) {
-        return func.call(context, accumulator, value, index, collection);
-      };
-    }
-    return function() {
-      return func.apply(context, arguments);
-    };
-  };
-
-  // A mostly-internal function to generate callbacks that can be applied
-  // to each element in a collection, returning the desired result — either
-  // identity, an arbitrary callback, a property matcher, or a property accessor.
-  var cb = function(value, context, argCount) {
-    if (value == null) return _.identity;
-    if (_.isFunction(value)) return optimizeCb(value, context, argCount);
-    if (_.isObject(value)) return _.matcher(value);
-    return _.property(value);
-  };
-  _.iteratee = function(value, context) {
-    return cb(value, context, Infinity);
-  };
-
-  // An internal function for creating assigner functions.
-  var createAssigner = function(keysFunc, undefinedOnly) {
-    return function(obj) {
-      var length = arguments.length;
-      if (length < 2 || obj == null) return obj;
-      for (var index = 1; index < length; index++) {
-        var source = arguments[index],
-            keys = keysFunc(source),
-            l = keys.length;
-        for (var i = 0; i < l; i++) {
-          var key = keys[i];
-          if (!undefinedOnly || obj[key] === void 0) obj[key] = source[key];
-        }
-      }
-      return obj;
-    };
-  };
-
-  // An internal function for creating a new object that inherits from another.
-  var baseCreate = function(prototype) {
-    if (!_.isObject(prototype)) return {};
-    if (nativeCreate) return nativeCreate(prototype);
-    Ctor.prototype = prototype;
-    var result = new Ctor;
-    Ctor.prototype = null;
-    return result;
-  };
-
-  var property = function(key) {
-    return function(obj) {
-      return obj == null ? void 0 : obj[key];
-    };
-  };
-
-  // Helper for collection methods to determine whether a collection
-  // should be iterated as an array or as an object
-  // Related: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
-  // Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094
-  var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;
-  var getLength = property('length');
-  var isArrayLike = function(collection) {
-    var length = getLength(collection);
-    return typeof length == 'number' && length >= 0 && length <= MAX_ARRAY_INDEX;
-  };
-
-  // Collection Functions
-  // --------------------
-
-  // The cornerstone, an `each` implementation, aka `forEach`.
-  // Handles raw objects in addition to array-likes. Treats all
-  // sparse array-likes as if they were dense.
-  _.each = _.forEach = function(obj, iteratee, context) {
-    iteratee = optimizeCb(iteratee, context);
-    var i, length;
-    if (isArrayLike(obj)) {
-      for (i = 0, length = obj.length; i < length; i++) {
-        iteratee(obj[i], i, obj);
-      }
-    } else {
-      var keys = _.keys(obj);
-      for (i = 0, length = keys.length; i < length; i++) {
-        iteratee(obj[keys[i]], keys[i], obj);
-      }
-    }
-    return obj;
-  };
-
-  // Return the results of applying the iteratee to each element.
-  _.map = _.collect = function(obj, iteratee, context) {
-    iteratee = cb(iteratee, context);
-    var keys = !isArrayLike(obj) && _.keys(obj),
-        length = (keys || obj).length,
-        results = Array(length);
-    for (var index = 0; index < length; index++) {
-      var currentKey = keys ? keys[index] : index;
-      results[index] = iteratee(obj[currentKey], currentKey, obj);
-    }
-    return results;
-  };
-
-  // Create a reducing function iterating left or right.
-  function createReduce(dir) {
-    // Optimized iterator function as using arguments.length
-    // in the main function will deoptimize the, see #1991.
-    function iterator(obj, iteratee, memo, keys, index, length) {
-      for (; index >= 0 && index < length; index += dir) {
-        var currentKey = keys ? keys[index] : index;
-        memo = iteratee(memo, obj[currentKey], currentKey, obj);
-      }
-      return memo;
-    }
-
-    return function(obj, iteratee, memo, context) {
-      iteratee = optimizeCb(iteratee, context, 4);
-      var keys = !isArrayLike(obj) && _.keys(obj),
-          length = (keys || obj).length,
-          index = dir > 0 ? 0 : length - 1;
-      // Determine the initial value if none is provided.
-      if (arguments.length < 3) {
-        memo = obj[keys ? keys[index] : index];
-        index += dir;
-      }
-      return iterator(obj, iteratee, memo, keys, index, length);
-    };
-  }
-
-  // **Reduce** builds up a single result from a list of values, aka `inject`,
-  // or `foldl`.
-  _.reduce = _.foldl = _.inject = createReduce(1);
-
-  // The right-associative version of reduce, also known as `foldr`.
-  _.reduceRight = _.foldr = createReduce(-1);
-
-  // Return the first value which passes a truth test. Aliased as `detect`.
-  _.find = _.detect = function(obj, predicate, context) {
-    var key;
-    if (isArrayLike(obj)) {
-      key = _.findIndex(obj, predicate, context);
-    } else {
-      key = _.findKey(obj, predicate, context);
-    }
-    if (key !== void 0 && key !== -1) return obj[key];
-  };
-
-  // Return all the elements that pass a truth test.
-  // Aliased as `select`.
-  _.filter = _.select = function(obj, predicate, context) {
-    var results = [];
-    predicate = cb(predicate, context);
-    _.each(obj, function(value, index, list) {
-      if (predicate(value, index, list)) results.push(value);
-    });
-    return results;
-  };
-
-  // Return all the elements for which a truth test fails.
-  _.reject = function(obj, predicate, context) {
-    return _.filter(obj, _.negate(cb(predicate)), context);
-  };
-
-  // Determine whether all of the elements match a truth test.
-  // Aliased as `all`.
-  _.every = _.all = function(obj, predicate, context) {
-    predicate = cb(predicate, context);
-    var keys = !isArrayLike(obj) && _.keys(obj),
-        length = (keys || obj).length;
-    for (var index = 0; index < length; index++) {
-      var currentKey = keys ? keys[index] : index;
-      if (!predicate(obj[currentKey], currentKey, obj)) return false;
-    }
-    return true;
-  };
-
-  // Determine if at least one element in the object matches a truth test.
-  // Aliased as `any`.
-  _.some = _.any = function(obj, predicate, context) {
-    predicate = cb(predicate, context);
-    var keys = !isArrayLike(obj) && _.keys(obj),
-        length = (keys || obj).length;
-    for (var index = 0; index < length; index++) {
-      var currentKey = keys ? keys[index] : index;
-      if (predicate(obj[currentKey], currentKey, obj)) return true;
-    }
-    return false;
-  };
-
-  // Determine if the array or object contains a given item (using `===`).
-  // Aliased as `includes` and `include`.
-  _.contains = _.includes = _.include = function(obj, item, fromIndex, guard) {
-    if (!isArrayLike(obj)) obj = _.values(obj);
-    if (typeof fromIndex != 'number' || guard) fromIndex = 0;
-    return _.indexOf(obj, item, fromIndex) >= 0;
-  };
-
-  // Invoke a method (with arguments) on every item in a collection.
-  _.invoke = function(obj, method) {
-    var args = slice.call(arguments, 2);
-    var isFunc = _.isFunction(method);
-    return _.map(obj, function(value) {
-      var func = isFunc ? method : value[method];
-      return func == null ? func : func.apply(value, args);
-    });
-  };
-
-  // Convenience version of a common use case of `map`: fetching a property.
-  _.pluck = function(obj, key) {
-    return _.map(obj, _.property(key));
-  };
-
-  // Convenience version of a common use case of `filter`: selecting only objects
-  // containing specific `key:value` pairs.
-  _.where = function(obj, attrs) {
-    return _.filter(obj, _.matcher(attrs));
-  };
-
-  // Convenience version of a common use case of `find`: getting the first object
-  // containing specific `key:value` pairs.
-  _.findWhere = function(obj, attrs) {
-    return _.find(obj, _.matcher(attrs));
-  };
-
-  // Return the maximum element (or element-based computation).
-  _.max = function(obj, iteratee, context) {
-    var result = -Infinity, lastComputed = -Infinity,
-        value, computed;
-    if (iteratee == null && obj != null) {
-      obj = isArrayLike(obj) ? obj : _.values(obj);
-      for (var i = 0, length = obj.length; i < length; i++) {
-        value = obj[i];
-        if (value > result) {
-          result = value;
-        }
-      }
-    } else {
-      iteratee = cb(iteratee, context);
-      _.each(obj, function(value, index, list) {
-        computed = iteratee(value, index, list);
-        if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
-          result = value;
-          lastComputed = computed;
-        }
-      });
-    }
-    return result;
-  };
-
-  // Return the minimum element (or element-based computation).
-  _.min = function(obj, iteratee, context) {
-    var result = Infinity, lastComputed = Infinity,
-        value, computed;
-    if (iteratee == null && obj != null) {
-      obj = isArrayLike(obj) ? obj : _.values(obj);
-      for (var i = 0, length = obj.length; i < length; i++) {
-        value = obj[i];
-        if (value < result) {
-          result = value;
-        }
-      }
-    } else {
-      iteratee = cb(iteratee, context);
-      _.each(obj, function(value, index, list) {
-        computed = iteratee(value, index, list);
-        if (computed < lastComputed || computed === Infinity && result === Infinity) {
-          result = value;
-          lastComputed = computed;
-        }
-      });
-    }
-    return result;
-  };
-
-  // Shuffle a collection, using the modern version of the
-  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
-  _.shuffle = function(obj) {
-    var set = isArrayLike(obj) ? obj : _.values(obj);
-    var length = set.length;
-    var shuffled = Array(length);
-    for (var index = 0, rand; index < length; index++) {
-      rand = _.random(0, index);
-      if (rand !== index) shuffled[index] = shuffled[rand];
-      shuffled[rand] = set[index];
-    }
-    return shuffled;
-  };
-
-  // Sample **n** random values from a collection.
-  // If **n** is not specified, returns a single random element.
-  // The internal `guard` argument allows it to work with `map`.
-  _.sample = function(obj, n, guard) {
-    if (n == null || guard) {
-      if (!isArrayLike(obj)) obj = _.values(obj);
-      return obj[_.random(obj.length - 1)];
-    }
-    return _.shuffle(obj).slice(0, Math.max(0, n));
-  };
-
-  // Sort the object's values by a criterion produced by an iteratee.
-  _.sortBy = function(obj, iteratee, context) {
-    iteratee = cb(iteratee, context);
-    return _.pluck(_.map(obj, function(value, index, list) {
-      return {
-        value: value,
-        index: index,
-        criteria: iteratee(value, index, list)
-      };
-    }).sort(function(left, right) {
-      var a = left.criteria;
-      var b = right.criteria;
-      if (a !== b) {
-        if (a > b || a === void 0) return 1;
-        if (a < b || b === void 0) return -1;
-      }
-      return left.index - right.index;
-    }), 'value');
-  };
-
-  // An internal function used for aggregate "group by" operations.
-  var group = function(behavior) {
-    return function(obj, iteratee, context) {
-      var result = {};
-      iteratee = cb(iteratee, context);
-      _.each(obj, function(value, index) {
-        var key = iteratee(value, index, obj);
-        behavior(result, value, key);
-      });
-      return result;
-    };
-  };
-
-  // Groups the object's values by a criterion. Pass either a string attribute
-  // to group by, or a function that returns the criterion.
-  _.groupBy = group(function(result, value, key) {
-    if (_.has(result, key)) result[key].push(value); else result[key] = [value];
-  });
-
-  // Indexes the object's values by a criterion, similar to `groupBy`, but for
-  // when you know that your index values will be unique.
-  _.indexBy = group(function(result, value, key) {
-    result[key] = value;
-  });
-
-  // Counts instances of an object that group by a certain criterion. Pass
-  // either a string attribute to count by, or a function that returns the
-  // criterion.
-  _.countBy = group(function(result, value, key) {
-    if (_.has(result, key)) result[key]++; else result[key] = 1;
-  });
-
-  // Safely create a real, live array from anything iterable.
-  _.toArray = function(obj) {
-    if (!obj) return [];
-    if (_.isArray(obj)) return slice.call(obj);
-    if (isArrayLike(obj)) return _.map(obj, _.identity);
-    return _.values(obj);
-  };
-
-  // Return the number of elements in an object.
-  _.size = function(obj) {
-    if (obj == null) return 0;
-    return isArrayLike(obj) ? obj.length : _.keys(obj).length;
-  };
-
-  // Split a collection into two arrays: one whose elements all satisfy the given
-  // predicate, and one whose elements all do not satisfy the predicate.
-  _.partition = function(obj, predicate, context) {
-    predicate = cb(predicate, context);
-    var pass = [], fail = [];
-    _.each(obj, function(value, key, obj) {
-      (predicate(value, key, obj) ? pass : fail).push(value);
-    });
-    return [pass, fail];
-  };
-
-  // Array Functions
-  // ---------------
-
-  // Get the first element of an array. Passing **n** will return the first N
-  // values in the array. Aliased as `head` and `take`. The **guard** check
-  // allows it to work with `_.map`.
-  _.first = _.head = _.take = function(array, n, guard) {
-    if (array == null) return void 0;
-    if (n == null || guard) return array[0];
-    return _.initial(array, array.length - n);
-  };
-
-  // Returns everything but the last entry of the array. Especially useful on
-  // the arguments object. Passing **n** will return all the values in
-  // the array, excluding the last N.
-  _.initial = function(array, n, guard) {
-    return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
-  };
-
-  // Get the last element of an array. Passing **n** will return the last N
-  // values in the array.
-  _.last = function(array, n, guard) {
-    if (array == null) return void 0;
-    if (n == null || guard) return array[array.length - 1];
-    return _.rest(array, Math.max(0, array.length - n));
-  };
-
-  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
-  // Especially useful on the arguments object. Passing an **n** will return
-  // the rest N values in the array.
-  _.rest = _.tail = _.drop = function(array, n, guard) {
-    return slice.call(array, n == null || guard ? 1 : n);
-  };
-
-  // Trim out all falsy values from an array.
-  _.compact = function(array) {
-    return _.filter(array, _.identity);
-  };
-
-  // Internal implementation of a recursive `flatten` function.
-  var flatten = function(input, shallow, strict, startIndex) {
-    var output = [], idx = 0;
-    for (var i = startIndex || 0, length = getLength(input); i < length; i++) {
-      var value = input[i];
-      if (isArrayLike(value) && (_.isArray(value) || _.isArguments(value))) {
-        //flatten current level of array or arguments object
-        if (!shallow) value = flatten(value, shallow, strict);
-        var j = 0, len = value.length;
-        output.length += len;
-        while (j < len) {
-          output[idx++] = value[j++];
-        }
-      } else if (!strict) {
-        output[idx++] = value;
-      }
-    }
-    return output;
-  };
-
-  // Flatten out an array, either recursively (by default), or just one level.
-  _.flatten = function(array, shallow) {
-    return flatten(array, shallow, false);
-  };
-
-  // Return a version of the array that does not contain the specified value(s).
-  _.without = function(array) {
-    return _.difference(array, slice.call(arguments, 1));
-  };
-
-  // Produce a duplicate-free version of the array. If the array has already
-  // been sorted, you have the option of using a faster algorithm.
-  // Aliased as `unique`.
-  _.uniq = _.unique = function(array, isSorted, iteratee, context) {
-    if (!_.isBoolean(isSorted)) {
-      context = iteratee;
-      iteratee = isSorted;
-      isSorted = false;
-    }
-    if (iteratee != null) iteratee = cb(iteratee, context);
-    var result = [];
-    var seen = [];
-    for (var i = 0, length = getLength(array); i < length; i++) {
-      var value = array[i],
-          computed = iteratee ? iteratee(value, i, array) : value;
-      if (isSorted) {
-        if (!i || seen !== computed) result.push(value);
-        seen = computed;
-      } else if (iteratee) {
-        if (!_.contains(seen, computed)) {
-          seen.push(computed);
-          result.push(value);
-        }
-      } else if (!_.contains(result, value)) {
-        result.push(value);
-      }
-    }
-    return result;
-  };
-
-  // Produce an array that contains the union: each distinct element from all of
-  // the passed-in arrays.
-  _.union = function() {
-    return _.uniq(flatten(arguments, true, true));
-  };
-
-  // Produce an array that contains every item shared between all the
-  // passed-in arrays.
-  _.intersection = function(array) {
-    var result = [];
-    var argsLength = arguments.length;
-    for (var i = 0, length = getLength(array); i < length; i++) {
-      var item = array[i];
-      if (_.contains(result, item)) continue;
-      for (var j = 1; j < argsLength; j++) {
-        if (!_.contains(arguments[j], item)) break;
-      }
-      if (j === argsLength) result.push(item);
-    }
-    return result;
-  };
-
-  // Take the difference between one array and a number of other arrays.
-  // Only the elements present in just the first array will remain.
-  _.difference = function(array) {
-    var rest = flatten(arguments, true, true, 1);
-    return _.filter(array, function(value){
-      return !_.contains(rest, value);
-    });
-  };
-
-  // Zip together multiple lists into a single array -- elements that share
-  // an index go together.
-  _.zip = function() {
-    return _.unzip(arguments);
-  };
-
-  // Complement of _.zip. Unzip accepts an array of arrays and groups
-  // each array's elements on shared indices
-  _.unzip = function(array) {
-    var length = array && _.max(array, getLength).length || 0;
-    var result = Array(length);
-
-    for (var index = 0; index < length; index++) {
-      result[index] = _.pluck(array, index);
-    }
-    return result;
-  };
-
-  // Converts lists into objects. Pass either a single array of `[key, value]`
-  // pairs, or two parallel arrays of the same length -- one of keys, and one of
-  // the corresponding values.
-  _.object = function(list, values) {
-    var result = {};
-    for (var i = 0, length = getLength(list); i < length; i++) {
-      if (values) {
-        result[list[i]] = values[i];
-      } else {
-        result[list[i][0]] = list[i][1];
-      }
-    }
-    return result;
-  };
-
-  // Generator function to create the findIndex and findLastIndex functions
-  function createPredicateIndexFinder(dir) {
-    return function(array, predicate, context) {
-      predicate = cb(predicate, context);
-      var length = getLength(array);
-      var index = dir > 0 ? 0 : length - 1;
-      for (; index >= 0 && index < length; index += dir) {
-        if (predicate(array[index], index, array)) return index;
-      }
-      return -1;
-    };
-  }
-
-  // Returns the first index on an array-like that passes a predicate test
-  _.findIndex = createPredicateIndexFinder(1);
-  _.findLastIndex = createPredicateIndexFinder(-1);
-
-  // Use a comparator function to figure out the smallest index at which
-  // an object should be inserted so as to maintain order. Uses binary search.
-  _.sortedIndex = function(array, obj, iteratee, context) {
-    iteratee = cb(iteratee, context, 1);
-    var value = iteratee(obj);
-    var low = 0, high = getLength(array);
-    while (low < high) {
-      var mid = Math.floor((low + high) / 2);
-      if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
-    }
-    return low;
-  };
-
-  // Generator function to create the indexOf and lastIndexOf functions
-  function createIndexFinder(dir, predicateFind, sortedIndex) {
-    return function(array, item, idx) {
-      var i = 0, length = getLength(array);
-      if (typeof idx == 'number') {
-        if (dir > 0) {
-            i = idx >= 0 ? idx : Math.max(idx + length, i);
-        } else {
-            length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1;
-        }
-      } else if (sortedIndex && idx && length) {
-        idx = sortedIndex(array, item);
-        return array[idx] === item ? idx : -1;
-      }
-      if (item !== item) {
-        idx = predicateFind(slice.call(array, i, length), _.isNaN);
-        return idx >= 0 ? idx + i : -1;
-      }
-      for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) {
-        if (array[idx] === item) return idx;
-      }
-      return -1;
-    };
-  }
-
-  // Return the position of the first occurrence of an item in an array,
-  // or -1 if the item is not included in the array.
-  // If the array is large and already in sort order, pass `true`
-  // for **isSorted** to use binary search.
-  _.indexOf = createIndexFinder(1, _.findIndex, _.sortedIndex);
-  _.lastIndexOf = createIndexFinder(-1, _.findLastIndex);
-
-  // Generate an integer Array containing an arithmetic progression. A port of
-  // the native Python `range()` function. See
-  // [the Python documentation](http://docs.python.org/library/functions.html#range).
-  _.range = function(start, stop, step) {
-    if (stop == null) {
-      stop = start || 0;
-      start = 0;
-    }
-    step = step || 1;
-
-    var length = Math.max(Math.ceil((stop - start) / step), 0);
-    var range = Array(length);
-
-    for (var idx = 0; idx < length; idx++, start += step) {
-      range[idx] = start;
-    }
-
-    return range;
-  };
-
-  // Function (ahem) Functions
-  // ------------------
-
-  // Determines whether to execute a function as a constructor
-  // or a normal function with the provided arguments
-  var executeBound = function(sourceFunc, boundFunc, context, callingContext, args) {
-    if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
-    var self = baseCreate(sourceFunc.prototype);
-    var result = sourceFunc.apply(self, args);
-    if (_.isObject(result)) return result;
-    return self;
-  };
-
-  // Create a function bound to a given object (assigning `this`, and arguments,
-  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
-  // available.
-  _.bind = function(func, context) {
-    if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
-    if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');
-    var args = slice.call(arguments, 2);
-    var bound = function() {
-      return executeBound(func, bound, context, this, args.concat(slice.call(arguments)));
-    };
-    return bound;
-  };
-
-  // Partially apply a function by creating a version that has had some of its
-  // arguments pre-filled, without changing its dynamic `this` context. _ acts
-  // as a placeholder, allowing any combination of arguments to be pre-filled.
-  _.partial = function(func) {
-    var boundArgs = slice.call(arguments, 1);
-    var bound = function() {
-      var position = 0, length = boundArgs.length;
-      var args = Array(length);
-      for (var i = 0; i < length; i++) {
-        args[i] = boundArgs[i] === _ ? arguments[position++] : boundArgs[i];
-      }
-      while (position < arguments.length) args.push(arguments[position++]);
-      return executeBound(func, bound, this, this, args);
-    };
-    return bound;
-  };
-
-  // Bind a number of an object's methods to that object. Remaining arguments
-  // are the method names to be bound. Useful for ensuring that all callbacks
-  // defined on an object belong to it.
-  _.bindAll = function(obj) {
-    var i, length = arguments.length, key;
-    if (length <= 1) throw new Error('bindAll must be passed function names');
-    for (i = 1; i < length; i++) {
-      key = arguments[i];
-      obj[key] = _.bind(obj[key], obj);
-    }
-    return obj;
-  };
-
-  // Memoize an expensive function by storing its results.
-  _.memoize = function(func, hasher) {
-    var memoize = function(key) {
-      var cache = memoize.cache;
-      var address = '' + (hasher ? hasher.apply(this, arguments) : key);
-      if (!_.has(cache, address)) cache[address] = func.apply(this, arguments);
-      return cache[address];
-    };
-    memoize.cache = {};
-    return memoize;
-  };
-
-  // Delays a function for the given number of milliseconds, and then calls
-  // it with the arguments supplied.
-  _.delay = function(func, wait) {
-    var args = slice.call(arguments, 2);
-    return setTimeout(function(){
-      return func.apply(null, args);
-    }, wait);
-  };
-
-  // Defers a function, scheduling it to run after the current call stack has
-  // cleared.
-  _.defer = _.partial(_.delay, _, 1);
-
-  // Returns a function, that, when invoked, will only be triggered at most once
-  // during a given window of time. Normally, the throttled function will run
-  // as much as it can, without ever going more than once per `wait` duration;
-  // but if you'd like to disable the execution on the leading edge, pass
-  // `{leading: false}`. To disable execution on the trailing edge, ditto.
-  _.throttle = function(func, wait, options) {
-    var context, args, result;
-    var timeout = null;
-    var previous = 0;
-    if (!options) options = {};
-    var later = function() {
-      previous = options.leading === false ? 0 : _.now();
-      timeout = null;
-      result = func.apply(context, args);
-      if (!timeout) context = args = null;
-    };
-    return function() {
-      var now = _.now();
-      if (!previous && options.leading === false) previous = now;
-      var remaining = wait - (now - previous);
-      context = this;
-      args = arguments;
-      if (remaining <= 0 || remaining > wait) {
-        if (timeout) {
-          clearTimeout(timeout);
-          timeout = null;
-        }
-        previous = now;
-        result = func.apply(context, args);
-        if (!timeout) context = args = null;
-      } else if (!timeout && options.trailing !== false) {
-        timeout = setTimeout(later, remaining);
-      }
-      return result;
-    };
-  };
-
-  // Returns a function, that, as long as it continues to be invoked, will not
-  // be triggered. The function will be called after it stops being called for
-  // N milliseconds. If `immediate` is passed, trigger the function on the
-  // leading edge, instead of the trailing.
-  _.debounce = function(func, wait, immediate) {
-    var timeout, args, context, timestamp, result;
-
-    var later = function() {
-      var last = _.now() - timestamp;
-
-      if (last < wait && last >= 0) {
-        timeout = setTimeout(later, wait - last);
-      } else {
-        timeout = null;
-        if (!immediate) {
-          result = func.apply(context, args);
-          if (!timeout) context = args = null;
-        }
-      }
-    };
-
-    return function() {
-      context = this;
-      args = arguments;
-      timestamp = _.now();
-      var callNow = immediate && !timeout;
-      if (!timeout) timeout = setTimeout(later, wait);
-      if (callNow) {
-        result = func.apply(context, args);
-        context = args = null;
-      }
-
-      return result;
-    };
-  };
-
-  // Returns the first function passed as an argument to the second,
-  // allowing you to adjust arguments, run code before and after, and
-  // conditionally execute the original function.
-  _.wrap = function(func, wrapper) {
-    return _.partial(wrapper, func);
-  };
-
-  // Returns a negated version of the passed-in predicate.
-  _.negate = function(predicate) {
-    return function() {
-      return !predicate.apply(this, arguments);
-    };
-  };
-
-  // Returns a function that is the composition of a list of functions, each
-  // consuming the return value of the function that follows.
-  _.compose = function() {
-    var args = arguments;
-    var start = args.length - 1;
-    return function() {
-      var i = start;
-      var result = args[start].apply(this, arguments);
-      while (i--) result = args[i].call(this, result);
-      return result;
-    };
-  };
-
-  // Returns a function that will only be executed on and after the Nth call.
-  _.after = function(times, func) {
-    return function() {
-      if (--times < 1) {
-        return func.apply(this, arguments);
-      }
-    };
-  };
-
-  // Returns a function that will only be executed up to (but not including) the Nth call.
-  _.before = function(times, func) {
-    var memo;
-    return function() {
-      if (--times > 0) {
-        memo = func.apply(this, arguments);
-      }
-      if (times <= 1) func = null;
-      return memo;
-    };
-  };
-
-  // Returns a function that will be executed at most one time, no matter how
-  // often you call it. Useful for lazy initialization.
-  _.once = _.partial(_.before, 2);
-
-  // Object Functions
-  // ----------------
-
-  // Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
-  var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
-  var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
-                      'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];
-
-  function collectNonEnumProps(obj, keys) {
-    var nonEnumIdx = nonEnumerableProps.length;
-    var constructor = obj.constructor;
-    var proto = (_.isFunction(constructor) && constructor.prototype) || ObjProto;
-
-    // Constructor is a special case.
-    var prop = 'constructor';
-    if (_.has(obj, prop) && !_.contains(keys, prop)) keys.push(prop);
-
-    while (nonEnumIdx--) {
-      prop = nonEnumerableProps[nonEnumIdx];
-      if (prop in obj && obj[prop] !== proto[prop] && !_.contains(keys, prop)) {
-        keys.push(prop);
-      }
-    }
-  }
-
-  // Retrieve the names of an object's own properties.
-  // Delegates to **ECMAScript 5**'s native `Object.keys`
-  _.keys = function(obj) {
-    if (!_.isObject(obj)) return [];
-    if (nativeKeys) return nativeKeys(obj);
-    var keys = [];
-    for (var key in obj) if (_.has(obj, key)) keys.push(key);
-    // Ahem, IE < 9.
-    if (hasEnumBug) collectNonEnumProps(obj, keys);
-    return keys;
-  };
-
-  // Retrieve all the property names of an object.
-  _.allKeys = function(obj) {
-    if (!_.isObject(obj)) return [];
-    var keys = [];
-    for (var key in obj) keys.push(key);
-    // Ahem, IE < 9.
-    if (hasEnumBug) collectNonEnumProps(obj, keys);
-    return keys;
-  };
-
-  // Retrieve the values of an object's properties.
-  _.values = function(obj) {
-    var keys = _.keys(obj);
-    var length = keys.length;
-    var values = Array(length);
-    for (var i = 0; i < length; i++) {
-      values[i] = obj[keys[i]];
-    }
-    return values;
-  };
-
-  // Returns the results of applying the iteratee to each element of the object
-  // In contrast to _.map it returns an object
-  _.mapObject = function(obj, iteratee, context) {
-    iteratee = cb(iteratee, context);
-    var keys =  _.keys(obj),
-          length = keys.length,
-          results = {},
-          currentKey;
-      for (var index = 0; index < length; index++) {
-        currentKey = keys[index];
-        results[currentKey] = iteratee(obj[currentKey], currentKey, obj);
-      }
-      return results;
-  };
-
-  // Convert an object into a list of `[key, value]` pairs.
-  _.pairs = function(obj) {
-    var keys = _.keys(obj);
-    var length = keys.length;
-    var pairs = Array(length);
-    for (var i = 0; i < length; i++) {
-      pairs[i] = [keys[i], obj[keys[i]]];
-    }
-    return pairs;
-  };
-
-  // Invert the keys and values of an object. The values must be serializable.
-  _.invert = function(obj) {
-    var result = {};
-    var keys = _.keys(obj);
-    for (var i = 0, length = keys.length; i < length; i++) {
-      result[obj[keys[i]]] = keys[i];
-    }
-    return result;
-  };
-
-  // Return a sorted list of the function names available on the object.
-  // Aliased as `methods`
-  _.functions = _.methods = function(obj) {
-    var names = [];
-    for (var key in obj) {
-      if (_.isFunction(obj[key])) names.push(key);
-    }
-    return names.sort();
-  };
-
-  // Extend a given object with all the properties in passed-in object(s).
-  _.extend = createAssigner(_.allKeys);
-
-  // Assigns a given object with all the own properties in the passed-in object(s)
-  // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
-  _.extendOwn = _.assign = createAssigner(_.keys);
-
-  // Returns the first key on an object that passes a predicate test
-  _.findKey = function(obj, predicate, context) {
-    predicate = cb(predicate, context);
-    var keys = _.keys(obj), key;
-    for (var i = 0, length = keys.length; i < length; i++) {
-      key = keys[i];
-      if (predicate(obj[key], key, obj)) return key;
-    }
-  };
-
-  // Return a copy of the object only containing the whitelisted properties.
-  _.pick = function(object, oiteratee, context) {
-    var result = {}, obj = object, iteratee, keys;
-    if (obj == null) return result;
-    if (_.isFunction(oiteratee)) {
-      keys = _.allKeys(obj);
-      iteratee = optimizeCb(oiteratee, context);
-    } else {
-      keys = flatten(arguments, false, false, 1);
-      iteratee = function(value, key, obj) { return key in obj; };
-      obj = Object(obj);
-    }
-    for (var i = 0, length = keys.length; i < length; i++) {
-      var key = keys[i];
-      var value = obj[key];
-      if (iteratee(value, key, obj)) result[key] = value;
-    }
-    return result;
-  };
-
-   // Return a copy of the object without the blacklisted properties.
-  _.omit = function(obj, iteratee, context) {
-    if (_.isFunction(iteratee)) {
-      iteratee = _.negate(iteratee);
-    } else {
-      var keys = _.map(flatten(arguments, false, false, 1), String);
-      iteratee = function(value, key) {
-        return !_.contains(keys, key);
-      };
-    }
-    return _.pick(obj, iteratee, context);
-  };
-
-  // Fill in a given object with default properties.
-  _.defaults = createAssigner(_.allKeys, true);
-
-  // Creates an object that inherits from the given prototype object.
-  // If additional properties are provided then they will be added to the
-  // created object.
-  _.create = function(prototype, props) {
-    var result = baseCreate(prototype);
-    if (props) _.extendOwn(result, props);
-    return result;
-  };
-
-  // Create a (shallow-cloned) duplicate of an object.
-  _.clone = function(obj) {
-    if (!_.isObject(obj)) return obj;
-    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
-  };
-
-  // Invokes interceptor with the obj, and then returns obj.
-  // The primary purpose of this method is to "tap into" a method chain, in
-  // order to perform operations on intermediate results within the chain.
-  _.tap = function(obj, interceptor) {
-    interceptor(obj);
-    return obj;
-  };
-
-  // Returns whether an object has a given set of `key:value` pairs.
-  _.isMatch = function(object, attrs) {
-    var keys = _.keys(attrs), length = keys.length;
-    if (object == null) return !length;
-    var obj = Object(object);
-    for (var i = 0; i < length; i++) {
-      var key = keys[i];
-      if (attrs[key] !== obj[key] || !(key in obj)) return false;
-    }
-    return true;
-  };
-
-
-  // Internal recursive comparison function for `isEqual`.
-  var eq = function(a, b, aStack, bStack) {
-    // Identical objects are equal. `0 === -0`, but they aren't identical.
-    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
-    if (a === b) return a !== 0 || 1 / a === 1 / b;
-    // A strict comparison is necessary because `null == undefined`.
-    if (a == null || b == null) return a === b;
-    // Unwrap any wrapped objects.
-    if (a instanceof _) a = a._wrapped;
-    if (b instanceof _) b = b._wrapped;
-    // Compare `[[Class]]` names.
-    var className = toString.call(a);
-    if (className !== toString.call(b)) return false;
-    switch (className) {
-      // Strings, numbers, regular expressions, dates, and booleans are compared by value.
-      case '[object RegExp]':
-      // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
-      case '[object String]':
-        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
-        // equivalent to `new String("5")`.
-        return '' + a === '' + b;
-      case '[object Number]':
-        // `NaN`s are equivalent, but non-reflexive.
-        // Object(NaN) is equivalent to NaN
-        if (+a !== +a) return +b !== +b;
-        // An `egal` comparison is performed for other numeric values.
-        return +a === 0 ? 1 / +a === 1 / b : +a === +b;
-      case '[object Date]':
-      case '[object Boolean]':
-        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
-        // millisecond representations. Note that invalid dates with millisecond representations
-        // of `NaN` are not equivalent.
-        return +a === +b;
-    }
-
-    var areArrays = className === '[object Array]';
-    if (!areArrays) {
-      if (typeof a != 'object' || typeof b != 'object') return false;
-
-      // Objects with different constructors are not equivalent, but `Object`s or `Array`s
-      // from different frames are.
-      var aCtor = a.constructor, bCtor = b.constructor;
-      if (aCtor !== bCtor && !(_.isFunction(aCtor) && aCtor instanceof aCtor &&
-                               _.isFunction(bCtor) && bCtor instanceof bCtor)
-                          && ('constructor' in a && 'constructor' in b)) {
-        return false;
-      }
-    }
-    // Assume equality for cyclic structures. The algorithm for detecting cyclic
-    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
-
-    // Initializing stack of traversed objects.
-    // It's done here since we only need them for objects and arrays comparison.
-    aStack = aStack || [];
-    bStack = bStack || [];
-    var length = aStack.length;
-    while (length--) {
-      // Linear search. Performance is inversely proportional to the number of
-      // unique nested structures.
-      if (aStack[length] === a) return bStack[length] === b;
-    }
-
-    // Add the first object to the stack of traversed objects.
-    aStack.push(a);
-    bStack.push(b);
-
-    // Recursively compare objects and arrays.
-    if (areArrays) {
-      // Compare array lengths to determine if a deep comparison is necessary.
-      length = a.length;
-      if (length !== b.length) return false;
-      // Deep compare the contents, ignoring non-numeric properties.
-      while (length--) {
-        if (!eq(a[length], b[length], aStack, bStack)) return false;
-      }
-    } else {
-      // Deep compare objects.
-      var keys = _.keys(a), key;
-      length = keys.length;
-      // Ensure that both objects contain the same number of properties before comparing deep equality.
-      if (_.keys(b).length !== length) return false;
-      while (length--) {
-        // Deep compare each member
-        key = keys[length];
-        if (!(_.has(b, key) && eq(a[key], b[key], aStack, bStack))) return false;
-      }
-    }
-    // Remove the first object from the stack of traversed objects.
-    aStack.pop();
-    bStack.pop();
-    return true;
-  };
-
-  // Perform a deep comparison to check if two objects are equal.
-  _.isEqual = function(a, b) {
-    return eq(a, b);
-  };
-
-  // Is a given array, string, or object empty?
-  // An "empty" object has no enumerable own-properties.
-  _.isEmpty = function(obj) {
-    if (obj == null) return true;
-    if (isArrayLike(obj) && (_.isArray(obj) || _.isString(obj) || _.isArguments(obj))) return obj.length === 0;
-    return _.keys(obj).length === 0;
-  };
-
-  // Is a given value a DOM element?
-  _.isElement = function(obj) {
-    return !!(obj && obj.nodeType === 1);
-  };
-
-  // Is a given value an array?
-  // Delegates to ECMA5's native Array.isArray
-  _.isArray = nativeIsArray || function(obj) {
-    return toString.call(obj) === '[object Array]';
-  };
-
-  // Is a given variable an object?
-  _.isObject = function(obj) {
-    var type = typeof obj;
-    return type === 'function' || type === 'object' && !!obj;
-  };
-
-  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp, isError.
-  _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error'], function(name) {
-    _['is' + name] = function(obj) {
-      return toString.call(obj) === '[object ' + name + ']';
-    };
-  });
-
-  // Define a fallback version of the method in browsers (ahem, IE < 9), where
-  // there isn't any inspectable "Arguments" type.
-  if (!_.isArguments(arguments)) {
-    _.isArguments = function(obj) {
-      return _.has(obj, 'callee');
-    };
-  }
-
-  // Optimize `isFunction` if appropriate. Work around some typeof bugs in old v8,
-  // IE 11 (#1621), and in Safari 8 (#1929).
-  if (typeof /./ != 'function' && typeof Int8Array != 'object') {
-    _.isFunction = function(obj) {
-      return typeof obj == 'function' || false;
-    };
-  }
-
-  // Is a given object a finite number?
-  _.isFinite = function(obj) {
-    return isFinite(obj) && !isNaN(parseFloat(obj));
-  };
-
-  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
-  _.isNaN = function(obj) {
-    return _.isNumber(obj) && obj !== +obj;
-  };
-
-  // Is a given value a boolean?
-  _.isBoolean = function(obj) {
-    return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
-  };
-
-  // Is a given value equal to null?
-  _.isNull = function(obj) {
-    return obj === null;
-  };
-
-  // Is a given variable undefined?
-  _.isUndefined = function(obj) {
-    return obj === void 0;
-  };
-
-  // Shortcut function for checking if an object has a given property directly
-  // on itself (in other words, not on a prototype).
-  _.has = function(obj, key) {
-    return obj != null && hasOwnProperty.call(obj, key);
-  };
-
-  // Utility Functions
-  // -----------------
-
-  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
-  // previous owner. Returns a reference to the Underscore object.
-  _.noConflict = function() {
-    root._ = previousUnderscore;
-    return this;
-  };
-
-  // Keep the identity function around for default iteratees.
-  _.identity = function(value) {
-    return value;
-  };
-
-  // Predicate-generating functions. Often useful outside of Underscore.
-  _.constant = function(value) {
-    return function() {
-      return value;
-    };
-  };
-
-  _.noop = function(){};
-
-  _.property = property;
-
-  // Generates a function for a given object that returns a given property.
-  _.propertyOf = function(obj) {
-    return obj == null ? function(){} : function(key) {
-      return obj[key];
-    };
-  };
-
-  // Returns a predicate for checking whether an object has a given set of
-  // `key:value` pairs.
-  _.matcher = _.matches = function(attrs) {
-    attrs = _.extendOwn({}, attrs);
-    return function(obj) {
-      return _.isMatch(obj, attrs);
-    };
-  };
-
-  // Run a function **n** times.
-  _.times = function(n, iteratee, context) {
-    var accum = Array(Math.max(0, n));
-    iteratee = optimizeCb(iteratee, context, 1);
-    for (var i = 0; i < n; i++) accum[i] = iteratee(i);
-    return accum;
-  };
-
-  // Return a random integer between min and max (inclusive).
-  _.random = function(min, max) {
-    if (max == null) {
-      max = min;
-      min = 0;
-    }
-    return min + Math.floor(Math.random() * (max - min + 1));
-  };
-
-  // A (possibly faster) way to get the current timestamp as an integer.
-  _.now = Date.now || function() {
-    return new Date().getTime();
-  };
-
-   // List of HTML entities for escaping.
-  var escapeMap = {
-    '&': '&amp;',
-    '<': '&lt;',
-    '>': '&gt;',
-    '"': '&quot;',
-    "'": '&#x27;',
-    '`': '&#x60;'
-  };
-  var unescapeMap = _.invert(escapeMap);
-
-  // Functions for escaping and unescaping strings to/from HTML interpolation.
-  var createEscaper = function(map) {
-    var escaper = function(match) {
-      return map[match];
-    };
-    // Regexes for identifying a key that needs to be escaped
-    var source = '(?:' + _.keys(map).join('|') + ')';
-    var testRegexp = RegExp(source);
-    var replaceRegexp = RegExp(source, 'g');
-    return function(string) {
-      string = string == null ? '' : '' + string;
-      return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
-    };
-  };
-  _.escape = createEscaper(escapeMap);
-  _.unescape = createEscaper(unescapeMap);
-
-  // If the value of the named `property` is a function then invoke it with the
-  // `object` as context; otherwise, return it.
-  _.result = function(object, property, fallback) {
-    var value = object == null ? void 0 : object[property];
-    if (value === void 0) {
-      value = fallback;
-    }
-    return _.isFunction(value) ? value.call(object) : value;
-  };
-
-  // Generate a unique integer id (unique within the entire client session).
-  // Useful for temporary DOM ids.
-  var idCounter = 0;
-  _.uniqueId = function(prefix) {
-    var id = ++idCounter + '';
-    return prefix ? prefix + id : id;
-  };
-
-  // By default, Underscore uses ERB-style template delimiters, change the
-  // following template settings to use alternative delimiters.
-  _.templateSettings = {
-    evaluate    : /<%([\s\S]+?)%>/g,
-    interpolate : /<%=([\s\S]+?)%>/g,
-    escape      : /<%-([\s\S]+?)%>/g
-  };
-
-  // When customizing `templateSettings`, if you don't want to define an
-  // interpolation, evaluation or escaping regex, we need one that is
-  // guaranteed not to match.
-  var noMatch = /(.)^/;
-
-  // Certain characters need to be escaped so that they can be put into a
-  // string literal.
-  var escapes = {
-    "'":      "'",
-    '\\':     '\\',
-    '\r':     'r',
-    '\n':     'n',
-    '\u2028': 'u2028',
-    '\u2029': 'u2029'
-  };
-
-  var escaper = /\\|'|\r|\n|\u2028|\u2029/g;
-
-  var escapeChar = function(match) {
-    return '\\' + escapes[match];
-  };
-
-  // JavaScript micro-templating, similar to John Resig's implementation.
-  // Underscore templating handles arbitrary delimiters, preserves whitespace,
-  // and correctly escapes quotes within interpolated code.
-  // NB: `oldSettings` only exists for backwards compatibility.
-  _.template = function(text, settings, oldSettings) {
-    if (!settings && oldSettings) settings = oldSettings;
-    settings = _.defaults({}, settings, _.templateSettings);
-
-    // Combine delimiters into one regular expression via alternation.
-    var matcher = RegExp([
-      (settings.escape || noMatch).source,
-      (settings.interpolate || noMatch).source,
-      (settings.evaluate || noMatch).source
-    ].join('|') + '|$', 'g');
-
-    // Compile the template source, escaping string literals appropriately.
-    var index = 0;
-    var source = "__p+='";
-    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
-      source += text.slice(index, offset).replace(escaper, escapeChar);
-      index = offset + match.length;
-
-      if (escape) {
-        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
-      } else if (interpolate) {
-        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
-      } else if (evaluate) {
-        source += "';\n" + evaluate + "\n__p+='";
-      }
-
-      // Adobe VMs need the match returned to produce the correct offest.
-      return match;
-    });
-    source += "';\n";
-
-    // If a variable is not specified, place data values in local scope.
-    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
-
-    source = "var __t,__p='',__j=Array.prototype.join," +
-      "print=function(){__p+=__j.call(arguments,'');};\n" +
-      source + 'return __p;\n';
-
-    try {
-      var render = new Function(settings.variable || 'obj', '_', source);
-    } catch (e) {
-      e.source = source;
-      throw e;
-    }
-
-    var template = function(data) {
-      return render.call(this, data, _);
-    };
-
-    // Provide the compiled source as a convenience for precompilation.
-    var argument = settings.variable || 'obj';
-    template.source = 'function(' + argument + '){\n' + source + '}';
-
-    return template;
-  };
-
-  // Add a "chain" function. Start chaining a wrapped Underscore object.
-  _.chain = function(obj) {
-    var instance = _(obj);
-    instance._chain = true;
-    return instance;
-  };
-
-  // OOP
-  // ---------------
-  // If Underscore is called as a function, it returns a wrapped object that
-  // can be used OO-style. This wrapper holds altered versions of all the
-  // underscore functions. Wrapped objects may be chained.
-
-  // Helper function to continue chaining intermediate results.
-  var result = function(instance, obj) {
-    return instance._chain ? _(obj).chain() : obj;
-  };
-
-  // Add your own custom functions to the Underscore object.
-  _.mixin = function(obj) {
-    _.each(_.functions(obj), function(name) {
-      var func = _[name] = obj[name];
-      _.prototype[name] = function() {
-        var args = [this._wrapped];
-        push.apply(args, arguments);
-        return result(this, func.apply(_, args));
-      };
-    });
-  };
-
-  // Add all of the Underscore functions to the wrapper object.
-  _.mixin(_);
-
-  // Add all mutator Array functions to the wrapper.
-  _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
-    var method = ArrayProto[name];
-    _.prototype[name] = function() {
-      var obj = this._wrapped;
-      method.apply(obj, arguments);
-      if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0];
-      return result(this, obj);
-    };
-  });
-
-  // Add all accessor Array functions to the wrapper.
-  _.each(['concat', 'join', 'slice'], function(name) {
-    var method = ArrayProto[name];
-    _.prototype[name] = function() {
-      return result(this, method.apply(this._wrapped, arguments));
-    };
-  });
-
-  // Extracts the result from a wrapped and chained object.
-  _.prototype.value = function() {
-    return this._wrapped;
-  };
-
-  // Provide unwrapping proxy for some methods used in engine operations
-  // such as arithmetic and JSON stringification.
-  _.prototype.valueOf = _.prototype.toJSON = _.prototype.value;
-
-  _.prototype.toString = function() {
-    return '' + this._wrapped;
-  };
-
-  // AMD registration happens at the end for compatibility with AMD loaders
-  // that may not enforce next-turn semantics on modules. Even though general
-  // practice for AMD registration is to be anonymous, underscore registers
-  // as a named module because, like jQuery, it is a base library that is
-  // popular enough to be bundled in a third party lib, but not be part of
-  // an AMD load request. Those cases could generate an error when an
-  // anonymous define() is called outside of a loader request.
-  if (typeof define === 'function' && define.amd) {
-    define('underscore', [], function() {
-      return _;
-    });
-  }
-}.call(this));