Added debug mode constant.
Added debugging info to Main class.
Added more debug info to Main.
Added getCollisionGroupFromCollider(Collider) method that returns a
CollisionGroup that contains only Colliders that insect with the input
Collider.
Removed unused imports.
Updated Physics to use less power hungry collision detection.
Removed artifacts during collision detection.
Lowered the max fps to 60.
Made backgroundTile tile infinitely in all directions (including up and
right!).
Tided up Puzz Blocks and change max FPS.
Created KeyboardController class.
Added keyboard game constants
Added implementation of KeyboardController.
Changed MAX_FPS.
Added new debug logging method.
Changed walking speed.