corrected a load of set but unused variables which threw compiler warnings
Changes to Makefile to use -fno-aggressive-loop-optimizations for gcc>4.8, see #100
Fixed missing factors in PI_rate.c
Added pi_rates.c
Put check around windsave command in python, so only rank0 writes
Added a Debug feature to log.c and a new parameter switch -d to python to replace the use of printf for debugging
Fixed issue 106 which had to do
with the fact that we want at least a minimimil model to be
calculated if the user simply hist carriage return for every
interactive command.  Now you will run one ionization and one
spectral cycle for a simple SV model.

In the process, elimianted the variable wcycle, pcycle, wcycles
and pcycles in favor of the analagous variable sin the goe
structure.
Small changes to elimiante warnings when
compiled with clash
Small change to .travis.yml to reflect examples change
Changes to allow for microclumping ot the wind #108
Small changes in preparation for the public
relaase.  In particularly, effectively commenented out the Compton torus
and changed input for photons_per_cycle to a double, so that numbers like
1e6 could be input.
ksl - documention only
Small change to keyword explanation
Replaced external variable s (the main spectrum structure) with xxspec to make it more descriptive
Added a new spectrum to all of the output spectral files.
The new spectrum which is now the first spectrum printed is the spectrum of the
created photons as they would be observed at 100 pc, before their inteaction with
the wind.  The only photons which are excluded are photons that are destroyed by
hitting hard surfaces, like the disk.
Small documentation changes to spectra.c
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
Fixed reporting of temps in parallel mode in wind_update, see #110