Changes

This is a major feature release featuring innumerous changes and bugfixes. New features include support for spin containers for psueedo psuedo atoms, NOE distance restraints, improved structure handling with multiple molecules and multiple models, the N-state model with equal and fixed probabilities, handling of the Bruker ncproc parameter, return of hybridisation, return of MOLMOL macros for illustrating model-free parameters, and initial support for the new Frame Order theories.