Switch hsm to using fftw for fourier transform
(#340)
Turn off TMV debugging in hsm
(#340)
Apply mask at the start so don't have so many if statements
(#340)
Use matrix multiplication to determine moments
(#340)
In find_ellipmom_1, only loop through pixels with good rho2, so we can remove the if statement
(#340)
Faster convolution, but makes precomputed regauss values fail.  Need to ask Rachel to look at this.
(#340)
Fix offsets to be consistent with previous code
(#340)
Add option for kmin_factor and kmax_factor to lensing ps buildGrid function.
(#377)
Merge branch '#372' into #340
Merge branch '#372' into #377
Make sure ObjectData starts with all 0's.
(#340)
added to error messages
(#377)
Add clarifying comment about more stringent test of shear variance accuracy
(#377)
Remove debugging print statements.
(#377)
Fix some doc errors in fits.py.  Also add new writeFile function to write an hdu_list.
(#417)
Fix wrong 'if hdu_list' and similar, since fails for hdu_list = HDUList()
(#417)
Add unit tests for new writeFile functionality.  Also tests the empty HDUList() that used to fail.
(#417)
Clarify the compression options available for writeFits
(#417)
Add clarification that kmin_factor, kmax_factor are just convenience parameters.
Check that ngrid, kmin_factor, kmax_factor are integers