nucleus class inside of nucleus.py
atom class in atom.py; testing Nucleus class >> atom
molecule.py -create
working with nucleosynthesis -got to: set up atom & molecules bondings
Merge branch 'master' of https://github.com/defm03/chemistry-cc

* 'master' of https://github.com/defm03/chemistry-cc:
  img pos change
  Models to do in Lua; info
  Create notes_3.md