Phaser.Game parent can now be a HTMLElement
Added scrollFactorX/scrollFactorY to TilemapLayers - controls rate of movement of layers as a factor of camera position
Implementing PluginManager.remove function, added PluginManager.removeAll function.
Switched Tilemap to use user-specified layer.

Tilemap was using the current layer even if a layer was specified as a
parameter in getTile/setTile. Changed it to use the user layer if one is
specified.
filter test updates
Lots of renderTexture updates and examples added
BitmapData object added
Updates
More updates to BitmapData.
Update docs, all optional parameters documented as optional, specified default values