full unit test coverage for hsm.py
(#516)
full unit test coverage for shear.py
(#516)
expanded unit test for galsim.integ module
(#516)
expanded unit test for galsim.LookupTable
(#516)
fix bug: missing import statement
(#516)
some simple fleshing out of unit tests for RealGalaxy
(#516)
some simple fleshing out of unit tests for optics - not much to do here
(#516)
add unit test for permute method, and improved unit tests for DistDeviate
(#516)