Two cameras only, one for 2d one for 3d -- none of this camera-per-state bs.
Still have a bug with switching while in the menu, but otherwise things
are working well.
The general idea is that we will have 2 cameras total, one for 2d and
one for 3d. Start with 2d and switch to 3d. Each camera will be marked
with it's state, and there will be a system which listens for some event
(or resource update) to change the camera.
Skybox example and working in game.
Need to do something cool to take advantage of it like moving the
camera, but it's there and I know roughly how to make one!
* Added `moves` ledger to Board
* This should help with future work like undo, automated tests,
net-play.
* Refactored 2d and 3d displays to use BoardIndex -> Transform
* This means we can have a generic system set the position of Entities
based on moves on the Board.
* Refactored 2d view to have centered board
* (instead of shifting root entity which had poor behavior
characteristics)
Elijah Voigt