hitArea now also support a polygon object
JsonLoader extracted from SpriteSheetLoader
Merge pull request #150 from floatdrop/dev

JsonLoader extracted from SpriteSheetLoader
Fixed documentation in JsonLoader
Merge pull request #151 from floatdrop/dev

Fixed documentation in JsonLoader
Text bug Fixes

Fixed bug with where only 1 bitmap font can be used
Fixed bug when setting Text value to a number value by using toString
Typo in WebGLRenderGroup?
add wordwrap function in PIXI.Text.
WebGL bug fixes
Merge pull request #159 from alfa-jpn/bugfix/webgl

WebGL bug fixes
Merge pull request #158 from alfa-jpn/dev

add wordwrap function in PIXI.Text.
Bug Fix

Fixed bug in webGL renderer when batch splitting used wrong texture.
Updated comments for Text Object
Fix update textures in handleContextRestored

* you try to iterate on PIXI.TextureCache as Array but it's Object;
* PIXI.WebGLRenderer.updateTexture deals with base texture, so we need to get such a field;
* need to texture._glTexture = null, because PIXI.WebGLRenderer.updateTexture only deal with texture without _glTexture;
* and also run as static method PIXI.WebGLRenderer.updateTexture(...);
Fix for Chrome error when loading texture created with new Image()

See https://code.google.com/p/chromium/issues/detail?id=115668
Spine Update

Spine loader added
Spine Runtime added
Spine Object added
Spine example added
Merge branch 'dev---spine' into dev
Spine Example updates

Fix merge issue
Updated spine examples
ground image update for spine pixi example
Only render children, if it has some (DisplayObject does not)
trying to follow coding style