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support custom idist, odist in fft Plan
update fft Plan docstring to reflect the additional parameters added
Merge pull request #89 from grlee77/fft_fix

ENH:  enable advanced data layout options in fft Plan class
Add Gregory Lee to contributors list.
FIX: Explicit integer use for _cublas_version
Merge pull request #90 from Eric89GXL/fix-int

FIX: Explicit integer use for _cublas_version
Update CHANGES.
FIX: Nest import to avoid unnecessary cublas import
Merge pull request #91 from Eric89GXL/nest-import

FIX: Nest import to avoid unnecessary cublas import when importing fft module.
Update CHANGES.
Only expose cublas*getriBatched functions for CUBLAS 5.5 and later (#92).
cusparse CFFI autowrapping implemented
cusparse: some higher level wrappers added
cusparse tests added
higher lever CSR object added to cusparse