Cloning, Bugfixes, Unit Tests
#ADD: The CopyTo algorithm of the CloneProvider now attempts to preserve as much objects from the target graph as possible, by re-using instances at the same position in the object graph.
#ADD: Added Unit Tests for target object preservation during CopyTo operations.
#FIX: Fixed GameObject CopyTo behavior always creating new child Components and GameObjects instead of using existing ones.
#FIX: Fixed TreeView exception when performing dragdrop scroll on an empty TreeView.