* Rename onOwnerRemovedFromScene to onDestroy (because it can be now called when a scene is destroyed)
* Fix it being not called when a scene is destroyed (so behavior don't get a chance to clean up what they have created)
* Fix onCreated being called before the object is fully initialized (for custom behaviors or behaviors relying on an object type)
As the text entry object has no real renderable object, PIXI (only tested this renderer) crash trying to set the renderable object on Z-Order and Layer updates, a better solution is welcomed :)
Thanks to exposePIXIDisplayObject, objects can expose the PIXI.DisplayObject that they are using
and let RuntimeObject handles common operations (layer change, z order change, deletion, visibility).