Merge branch 'master' into #407
added trial drawK_Gaussian test, checking and debugging...
(#407)
made assert tests almost_equal, with decimal=15, passes
(#407)
ooops forgot to uncomment all other tests from if __main__
(#407)
added a little more dox
(#407)
added a Moffat/Exponential pixel level drawK comparison test, just checking it out...
(#407)
used matplotlib to choose good test scales dk, tests pass
(#407)
uncommented all interim testing stuff, ready to go I think
(#407)
made the drawn pixel comparisons slightly less stringent - they pass on my machine but system specific differences might alter, e.g., FFT or numerical results and 14 decimal places is still pretty good
(#407)
Modify flux to O(1) and relax test to decimal=12
(#407)
Merge pull request #410 from GalSim-developers/#407

#407 Fix drawK errors, and improve non-truncated Moffat
Merge branch 'master' into #372