Writing a small multiplayer game with Boardgame.io and Phaser.

Things I have not written:

* any unit tests

Things I have written:

* a "DevHooks" file to make it easy to consolidate quick e2e test patches on top of the regular game flow

* Lots and lots of exploratory code that got torn up and replaced right after it was written, which would have taken twice + change as long if I'd written unit tests