[ANN] CPAnimationContext in the master

[Dogild]

Hi guys,

A first version of CPAnimationContext has been merged in the master ! This is a first version and maybe you will encounter some issues or a lack of features!

You can test it with the manual example in Tests/Manual/CPAnimatablePropertyContainerTest/

This new feature is NOT included in Cappuccino 0.9.9. 

And special thanks to cacaodev for his work!

Alex