Fix glitch at the end of move piece animation.
Adjust camera aspect ratio when the windows is resized.
Fix issue when piece was removed before mvoe animation was over.
Add the ability to enable/disable board animations.
Enable piece animations in the PlayingState.
Add TODO item.
Extract a new class: AnimationController.
Add missing files from previous commit.
Add a game test for the AnimationController class.
Wait until the animation for the last move is complete before quitting.