Use major.minor format in the version string of the sphinx configuration file
CustomKernel fixes
Added automodsumm_writereprocessed sphinx configuration option
Added missing newline between lines in automodsumm debug output
Update changelog

[ci skip]
Printing units too, when printing the table.
Fixes issue raising some VO warnings when DeprecationWarnings are
converted to exceptions on Python 2.6
raised exception in case scale mismatches
Make astropy.modeling compatible with Python 2 and 3 using six
Fix rebuilding col views where parent table was not set
Update CHANGES.rst with #2039 fix
Fixed pragma typo in _open_shelve
Merge pull request #2039 from taldcroft/table/rebuild-cols

Can't rename table columns after sorting
Added CustomKernel tests for zero-summed kernels.
Don't do the _tempfilestodel check if it is None

Closes #2036
time-no-scale-init
Merge pull request #2043 from eteq/fix-2036

Fix for #2036
Merge pull request #2027 from mdboom/vo/exception-deprecation

Fix deprecation on Python 2.6 when raising some warnings in `io.votable`
Merge pull request #2042 from pllim/fix-shelve-pragma

Fixed pragma typo in _open_shelve
Printing tables shows units, by default, if present.