master clean

Demos still not working in master branch:

• Elser name 'S' is not defined File "/home/russell/git/ProxPython/proxtoolbox/experiments/phase/Elser_Experiment.py", line 118, in loadData self.support_idx = np.nonzero(S)
• DegenerateOrbital, PlanarMolecule, OrthogonalOrbitals:
  TypeError: 'str' object is not callable

Untested: nothing