added flag to only clean populations if levels are radiatively linked
commented changes
Merge pull request #76 from jhmatthews/dev

Only clean for population inversions if levels have a radiative transition between them
Added check to see if photon crosses PI edge along path element ds and adjust kappa accordingly
changed frequency recorded in heating to be average of threshold + max along ds
Cleaned up and commented
corrected version
Corrected error when calculating frac_path in radiation
corrected frequency to freq_xs
Added test of python run for travis
small changed in travis yml
Merge pull request #77 from jhmatthews/edge_hotfix

check if a photoionization edge is crossed (from Doppler shifts) along path element ds
typo correction
Merge branch 'dev' of https://github.com/agnwinds/python into dev
updated travis.yml
travis edit
travis edit
travis edit
Merge pull request #79 from jhmatthews/dev

Extra Travis test that Python runs
Increased NWAVES, N_PDF and NMODS for disk14 models