-fixed height level controling for fish and gulls (has been brocken for ages)
-added spawner based spawning for any abm based spawning
-"default" state is now mandatory for any mob!
-added lots of security checks to callback handlers
-added new tracing facilitys mobf_core and mobf_core_helper
-fixed additional bugs in entity replacement code of state changer
-fixed bug mobf crashing on no good position beeing known for mob when needed
-removed wielditem steer and cow textures
-added mesh based 3d models for cow
-added workaround for lost dynamic data on saving of permanent data
-don't drown mobs but move to last known good position
-drop correct meat
-add support for multiple drops
-fix lots of bugs in state change handling
-add animation support
-added experimental mob npc to demonstrate animation handling
