We had a lot of discussion in Dev and a somewhat-close poll, but in
the end "Chat" was a better name than "Messages", and also has the
advantage of being shorter (which is nice for Chat.html and
Chat.plural which should be short).
Now that nodejs/node#3072 is mostly fixed, we can finally start using
Node 4+ features.
This refactor:
- uses arrow functions where appropriate
Note that arrow functions still aren't used in Mocha, where `this`
is sometimes meaningful.
This also removes the need for .bind() nearly everywhere, as well
as the `self = this` trick.
- refactors Validator and Connection into ES6 classes
- no longer uses Array#forEach for iterating arrays
We strongly prefer for (let i = 0; i < arr.length; i++) because of
performance reasons. Most forEaches have been replaced with for..of,
though, which is 5x slower than the long-form loop but 2x faster
than forEach, which is good enough outside of most inner loops.
The only exception is tournaments, which is due for a more invasive
refactor soon anyway.
This is a huge refactor that's a half-scratch rewrite of simulator.js.
Everything seems to be working so far, but with such a huge change,
I wouldn't be surprised if something went wrong.
