Hackish workaround for pyfits bug when they write RICE compressed files that ds9 cannot read
(#305)
Don't edit the TFORM if it already has a length specified.
(#305)
Fix my Rice workaround for larger fits files
(#305)
Found a better workaround that uses pyfits functions rather than a bare binary file edit
(#305)
Add docstrings for compression parameters