- Continuing work in adding layers to FlxIsoTilemap;
- Added new tileset - does not contain "ground" in wall tiles;
- Fixed Automaton spritesheet name;
- Added layer property to FlxIsoSprite;
- Added 'clone' method to IsoContainer;
- Adjusted map creation in PlayState to account for layers;
- Removed unused methods from FlxIsoTilemap.