Fixed MasterAnimationController cloning
Fixed AnimationController.clone : cloning labels
Fix shadow color outside shadowMapWidth
Fixed interpolateTo on scale
Fixed Matrix4x4.interpolateTo scale
Fix picking shader when triangle culling is not back
Merge branch 'dev' of github.com:aerys/minko into dev

Conflicts:
	src/aerys/minko/type/math/Matrix4x4.as
Merge remote-tracking branch 'upstream/dev' into dev