  molecules

  without argument:         list known molecules along with 'main' data
  with molecular name(s):   list all attributes of this molecule(s)
  with option -s:           -sh  sort according to hitran id number
                            -sg  sort according to geisa  id number
                            -sm  sort according to molecular mass
                            -sn  sort according to molecular name

  A dictionary of dictionaries containing molecular data along with some convenience functions.

  NOTE: Some entries have been renamed: 'Omega' ---> 'VibFreq'

