Fix error in des_psfex config specification
(#350)
Add GPL notice to some files that were missing it.
(#350)
Merge branch '#350' of github.com:GalSim-developers/GalSim into #350
Added new changes to CHANGELOG
(#350)
Change config to only load input fields when it's time to use them.  Get nobjects separately if needed.
(#350)