This is required in order to build the io.fits.compression module with
--use-system-cfitsio on systems where CFITSIO < 3.35 (the NO_DITHER
macro is not defined in older versions, and the value used where
NO_DITHER *is* used in 3.35 is 0, not -1 which is what NO_DITHER is
defined in 3.35)"
One more subprocess fix.
Fixed imports and undefined variables
Added regression test for angle formatting in radians with precision
Remove u'' for compatibility with Python 3.2
Fix undefined variable error
Merge pull request #1790 from jwoillez/fix_setup_helpers_subprocess

One more subprocess fix.
Merge pull request #1792 from astrofrog/fix-import-related-bugs

Fixed imports and undefined variables
Merge pull request #1793 from mdboom/vo/undefined-variable

Fix undefined variable problem in io.votable
Fixed a bug that caused masked FITS tables to be read incorrectly. This is quite subtle because it turns out that comparing a column to None with == does not return a boolean array, but a single boolean. This then causes the first row to always be masked (since False is the same as 0).
Added regression test for #1795
Merge pull request #1795 from astrofrog/fix-fits-masking

Strange mask values for FITS table
Merge pull request #1788 from embray/fix-system-cfitsio

Fix bug when building with --use-system-cfitsio and CFITSIO < 3.35
Update access_table.rst
Merge pull request #1798 from larrybradley/patch-1

Typo fix in access_table.rst