Clean up the comments in Interpolant.h
(#439)
Clean up the comments in OneDimensionalDeviate.h
(#439)
Remove default parameters from various places in the C++ code where it is not useful (and not used!)
(#439)
Remove default scale=1 from BaseImage to make it more explicit when this is getting a default value from other constructors.
(#439)
Enable offset parameter in draw
(#439)
Enable applyShift and createShifted with Position argument, in addition to current dx,dy args.
(#439)
Switch default image scale to 0, not 1.
(#439)
Enable dx,dy as kwargs in addition to just as args
(#439)
Fix slight error in my addition of the offset parameter to InterpolatedImage
(#439)
Add unit tests for draw with offset parameter
(#439)
Fix bug in fillXValueQuadrant
(#439)
Merge branch 'master' into #439

Conflicts:
	include/galsim/Interpolant.h
Slightly better version of the Si code.  Matches what I put up on wikipedia.
(#442)
Update stepk calculation in SBTransform to correctly account for a shift
(#442)
Adjust gsparams tests that failed because of a changed crossover point between NFT choices.
(#442)
typo
(#442)
Fix debugging relic that resulted in significant inefficiency in real-space convolution
(#439)
Fix some odd low-level artifacts in FFT by setting k=N/2 values explicitly to 0.
(#439)
Update test_offset to include non-integer offsets.
(#439)
Revert "Fix some odd low-level artifacts in FFT by setting k=N/2 values explicitly to 0."

This reverts commit f26534e67f203b9c9b96c6c030deb2635638ddab.