added new CC and PopIII models to sources.py  * 42 CCSN models from SNANA  * PopIII CC models from D. Whalen et al.  * all are currently stored in subdirs of sncosmo.github.io/data/models/
added new CC and PopIII models to sources.py
 * 42 CCSN models from SNANA
 * PopIII CC models from D. Whalen et al.
 * all are currently stored in subdirs of sncosmo.github.io/data/models/

sncosmo/sncosmo,dannygoldstein/sncosmo,sncosmo/sncosmo,kbarbary/sncosmo,sncosmo/sncosmo,kbarbary/sncosmo,dannygoldstein/sncosmo,dannygoldstein/sncosmo,kbarbary/sncosmo