units.py: SpectroscopicAxis -added one more if condition -de-parametrized tests (WIP)
units.py: SpectroscopicAxis
-added one more if condition
-de-parametrized tests (WIP)

allisony/pyspeckit,low-sky/pyspeckit,mikelum/pyspeckit,e-koch/pyspeckit,bsipocz/pyspeckit,jpinedaf/pyspeckit,e-koch/pyspeckit,jpinedaf/pyspeckit,vlas-sokolov/pyspeckit,keflavich/pyspeckit,bsipocz/pyspeckit,pyspeckit/pyspeckit,dinossimpson/pyspeckit,low-sky/pyspeckit,allisony/pyspeckit,vlas-sokolov/pyspeckit,mikelum/pyspeckit,keflavich/pyspeckit,pyspeckit/pyspeckit,dinossimpson/pyspeckit