Fixes lastGid calculation in Tileset. Adds unit tests for this calculation.
Adds support for transparency color in tilesets as per Tiled's TMX format specification.
TiledMap.onLayerRendered now includes the graphics context as a parameter
Fixes incorrect alpha modification in FadeIn and FadeOut transitions.
Performance improvements to rendering

TiledMap now uses SpriteCache for layers
Graphics now uses stencil for clipping instead of scissors
Graphics now supports SpriteCache rendering
Updates UATs