Fix for issue #70 in wind_div_v, wind2d.c
Merge branch 'dev' of https://github.com/agnwinds/python into dev
Removed abort condition for negative adiabatic cooling in kpkt
Merge branch 'dev' of https://github.com/agnwinds/python into dev
Moved banded estimators to subroutines to avoid code duplication. Also moved j_direct/scatter and ip calculations, and create a save_photon_stats subroutine for the extra diagnostics photon tools NSH implemented