CCLayout contentSize now immediately reflects changes to layout
Merge branch 'develop-v3' of https://github.com/cocos2d/cocos2d-iphone into develop-v3
Additional layout tests
Fixed some missing extern declarations
Changed layout test to include buttons
Cascade for colour and opacity now cascades all children, regardless of their cascade settings
Merge branch 'develop-v3' of https://github.com/apportable/cocos2d-iphone into develop-v3