* Fixed memory assert on shutdown.
Cleaned up the entity pointers on serialization, so that they no longer leak themselves, their asset references, or anything else within them.
* Added support for remapping entity refs across slice instances.
Slice instances can have components with entity references that have been modified to reference entities in other slice instances, or even in the parent. This change detects and remaps those references so that they work correctly.
Mike Balfour
6f61454be4