Created base Game class for games to extend.
- Solved problem of late libGDX init via drawing system constructor
- Solved problem of sharing entities via a shared list reference
Fixed drawing system caching
Added scene class with scene management via the game.
- Titlescreen shows a copyright-infrindged image. We'll change it, promise.
- Game is singleton-ish for scene management.
- Components are disposable (C# style)
- Default background color is black
- Removed test images/code.
Added input system and scene change, with first cut input component.
- Titlescreen: click to change scenes (doesn't work 100%)
- Added rough input component; lots more to do here.
- Parameterized action so we can use it in input components
- Added "programmer art" user/player image