add magnitudes API and zeropoints to SED/Bandpass
(#547)
numpy -> np
(#547)
Allow zeropoint='AB' in bandpass.__init__
(#547)
add Vega magnitudes and SED.withMagnitude
(#547)
add STmag zeropoints
(#547)
comments and aesthetics
(#547)
add calculateDCRMomemntShifts
(#547)
add calculateSeeingMomentShift
(#547)
comments
(#547)
debug and add test
(#547)
make SED.thin() preserve type
(#547)
Bandpass and SED methods now attempt to preserve type
(#547)
use SED chromatic moments methods in chromatic test suite
(#547)
numpy -> np
(#547)
some source information for vega.txt
(#547)
Merge branch 'master' into #547
Add share directory for where to put data files we want installed with galsim.  Start with vega.txt.
(#547)
Ignore meta_data.py
(#547)
Move share location to galsim subdirectory.
(#547)
Fix meta_data.share_dir when not installing
(#547)