Documentation of py_wind
Added comments and standard headers to all routines in phot_util, while trying
to understand what files py_wind prints out.  Several,including some
having to do with the energy absorbed in scatters from a given ion
 are clearly not useful for users
Changed which files are printed out automatically by py_wind -d or -s
swithces, and added standard headers to routines in py_wind_subs
Merge branch 'dev' of https://github.com/agnwinds/python into dev
Modified makefile to reflect structure changes
tweaked .travis.yml
Merge pull request #115 from jhmatthews/dev

Eliminate subcycles and photons_per_cycle variable in favour of NPHOT
comment for -e flag
Changes to models.h and version.h to get program to work on Mac
Merge branch 'dev' of https://github.com/agnwinds/python into dev
Put the number of allowed datapoints in a model back to a large value,
but this leaves an issue on Macs
Added LINELENGTH to get_spectype_oldname declaration- see #113
Merge branch 'dev' of https://github.com/agnwinds/python into dev
swapped printf for Log
Cleanup, comment and fixing logic in py_wind_macro.c
Small change to py_wind_macro.c
Direct ionization code added