Release date: 2018-02-13

SHA-256: e14ce5e33d6a2daf748026bd4947f3d9686ca4cfd53d10c3da46a0a9aceb7f2e (json.hpp), fde771d4b9e4f222965c00758a2bdd627d04fb7b59e09b7f3d1965abdc848505 (include.zip)

This release fixes several bugs in the library. All changes are backward-compatible.

- Fixed parsing of **CBOR strings with indefinite length** (#961). Earlier versions of this library misinterpreted the CBOR standard and rejected input with the `0x7F` start byte.
- Fixed user-defined **conversion to vector type** (#924, #969). A wrong SFINAE check rejected code though a user-defined conversion was provided.
- Fixed documentation of the parser behavior for **objects with duplicate keys** (#963). The exact behavior is not specified by [RFC 8259](https://tools.ietf.org/html/rfc8259) and the library now also provides no guarantee which object key is stored.
- Added check to detect memory **overflow when parsing UBJSON containers** (#962). The optimized UBJSON format allowed for specifying an array with billions of `null` elements with a few bytes and the library did not check whether this size exceeded `max_size()`.

- [Code coverage](https://coveralls.io/github/nlohmann/json) is now calculated for the individual header files, allowing to find uncovered lines more quickly than by browsing through the single header version (#953, #957).
- A Makefile target `run_benchmarks` was added to quickly build and run the benchmark suite.
- The documentation was harmonized with respect to the header inclusion (#955). Now all examples and the README use `#include <nlohmann/json.hpp>` to allow for selecting `single_include` or `include` or whatever installation folder as include directory.
- Added note on how to use the library with the [cget](http://cget.readthedocs.io/en/latest/) package manager (#954).

This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):

- Function [`iterator_wrapper`](http://nlohmann.github.io/json/classnlohmann_1_1basic__json_af1592a06bc63811886ade4f9d965045e.html#af1592a06bc63811886ade4f9d965045e) are deprecated. Please use the member function [`items()`](http://nlohmann.github.io/json/classnlohmann_1_1basic__json_afe3e137ace692efa08590d8df40f58dd.html#afe3e137ace692efa08590d8df40f58dd) instead.
- Functions [`friend std::istream& operator<<(basic_json&, std::istream&)`](http://nlohmann.github.io/json/classnlohmann_1_1basic__json_ab7285a92514fcdbe6de505ebaba92ea3.html#ab7285a92514fcdbe6de505ebaba92ea3) and [`friend std::ostream& operator>>(const basic_json&, std::ostream&)`](http://nlohmann.github.io/json/classnlohmann_1_1basic__json_a9e06deabe69262c3ffc5533d32856983.html#a9e06deabe69262c3ffc5533d32856983) are deprecated. Please use [`friend std::istream&  operator>>(std::istream&, basic_json&)`](http://nlohmann.github.io/json/classnlohmann_1_1basic__json_aaf363408931d76472ded14017e59c9e8.html#aaf363408931d76472ded14017e59c9e8) and [`friend operator<<(std::ostream&, const basic_json&)`](http://nlohmann.github.io/json/classnlohmann_1_1basic__json_a5e34c5435e557d0bf666bd7311211405.html#a5e34c5435e557d0bf666bd7311211405) instead.