MoleculeOneT class written
minor fixes, removed dimensionless rae and raesq fields in MoleculeSTS
removed stuff no one will read and no one needs to read
major refactor of everything
replaced np.exp with exp from standard library, refactorings (due to new Particle subclasses)
type annotation fix
minor docstring fixes
major refactor
docstring fixes
fixes due to new classes
E_vibr and E_vibr_dT methods added
wt_poly_norm_oneT added, refactorings and docstring fixes
prettier code
docstring fixes
cleanup
fixes for new Molecule classe
docstring fixes, new class names
docstring fixes
diss_offset used now where needed
fixed number of levels