Reinstall everything from a clean node_modules and package-lock.json
state.
Re-generate list of bundleDependencies and node_modules/.gitignore with
a script that does the right thing based on actual dependency state.
This removes a lot of very outdated dependencies, updates many to
their modern (usually promisified) versions, and updates (or removes)
code to account for the change.
Several dependencies have been completely removed, and others a bit
shuffled around, so that the node_modules folder can be bundled somewhat
more optimally than it would have otherwise.
