Updated NH2D model -Updated frequencies and weights from most recent lab work from Melosso+(2021). -removed some old comments
Updated NH2D model
-Updated frequencies and weights from most recent lab work from
Melosso+(2021).
-removed some old comments

keflavich/pyspeckit,keflavich/pyspeckit,jpinedaf/pyspeckit,pyspeckit/pyspeckit,jpinedaf/pyspeckit,pyspeckit/pyspeckit