Reworked the truth table writing to use fitsio instead of astropy due to version issues w/ Fermilab machines. This means that fitsio will be a required dependency from now on.
Reworked the truth table writing to use fitsio instead of astropy due to version issues w/ Fermilab machines. This means that fitsio will be a required dependency from now on.

sweverett/Balrog-GalSim,sweverett/Balrog-GalSim