Update mubosym_core.py
Update mubosym_core.py

previous merge accidentialy removed some essential classes
DocBO/mubosym,Shekharrajak/mubosym,Shekharrajak/mubosym,skidzo/mubosym,skidzo/mubosym,skidzo/mubosym,Shekharrajak/mubosym,DocBO/mubosym,DocBO/mubosym