added empty module for charge deflection model
(#524)
trial commit
trial commit II
(#524)
put a bit more flesh on the cdmodel bone
(#524)
Merge branch '#524' of github.com:GalSim-developers/GalSim into #524
Untested version of ImageAlloc::applyCD

This function takes four matrices with the shift parameters, (2dmax+1)^2 dimensional
if we go out to a maximum separation of dmax pixels, applies the charge shifts to the
image and returns the result.
Merge branch '#524' of github.com:GalSim-developers/GalSim into #524
added a little bit of class info docstring... these all need to be expanded
(#524)
Merge branch '#524' of github.com:GalSim-developers/GalSim into #524
fixing a compiler warning
Merge branch '#524' of github.com:GalSim-developers/GalSim into #524
minor alignment issue
(#524)
work in progress on python CDModel classes
Merge branch '#524' of github.com:GalSim-developers/GalSim into #524
minor fixes
put placeholder for Image method in place, know will need to make this much longer
(#524)
Merge branch '#524' of github.com:GalSim-developers/GalSim into #524
Merge branch 'master' into #524
Merge branch 'master' into #524
modified docstrings, 100char edits
(#524)