put new version of PSFCorr stuff from Mike in place of old version
(#331)
first stab at avoiding some exp calls
(#331)
less strict about failures, check err messages explicitly
(#331)
fixed bug: still need to step through image, even if we don't do any math
(#331)
much fancier testing script, which leads to conclusion that we should use 5sigma cutoff.
(#331)
some warning notes about MAX_MOMENT_NSIG2
(#331)
generally updated PSFCorr.h to account for new PSFCorr.cpp, and began including mask inputs
(#331)
updated PSFCorr.cpp files to include galaxy mask inputs
(#331)
put optional mask image into PSF corr routines at python level
(#331)
moved timing script to a more appropriate location
(#331)
added some sanity checking of input mask type, values
(#331)
don't import numpy unless we have to
(#331)
added testing script demonstrating the impact of masks on psfcorr.py routines
(#331)
fixed seriously evil bug that screwed up moments calculation when using masks
(#331)
ignore some junk generated while testing
(#331)
made shear estimators return estimates of e1/e2 or g1/g2, not a Shear, since shear estimators can have unphysical values
(#331)
made example scripts handle the new outputs of psfcorr.py routines
(#331)
added unit tests for psfcorr.py masking functionality
(#331)
documentation about draw, flux normalization, and pixel response
(#331)
updated test_mom_timing.py to account for new EstimateShearHSM output format
(#331)