fix docstring
Update CHANGES.rst

This fix doesn't apply to the v0.3.x releases.
Merge pull request #2351 from mdboom/misc/clang-analyzer

Miscellaneous things caught by clang-analyzer.
Merge pull request #1822 from embray/test-isolation

Fix tests that violate isolation
Merge pull request #2305 from embray/issue-2305

fits.PrimaryHDU doesn't properly initialize from scaled data
Merge pull request #2348 from nden/issue915

Add an option to use the corner of the pixel to compute the footprint
Merge pull request #2353 from mdboom/test/ignore-config-file

Ignore any user config file, even when running astropy.test()
Fix function wrapping.
Merge pull request #2359 from mdboom/misc/deprecated-bug

Fix deprecated function wrapping
Merge pull request #2310 from mdboom/tests/how-to-skip-all-doctests

Include an example of how to skip all doctests in a module
sip_pix2foc should subtract crpix and the end, and sip_foc2pix should do
the inverse.
Add an example.  Closes #1957 and supersedes #1959.
Workaround for #1953.  The BinTableHDU constructor handles data that is not already in FITS native format poorly.  FITS_rec.from_columns, on the other hand, does.  So go through that first.
some cleanup in io/ascii/tests

Some of the tests still had import ... as asciitable as a heritage
from the old asciitable package. Similarly, there was some
require_numpy from times when asciitable worked without numpy.
Nothing important, but hey, why not fix that when I am sitting at a
bus station anyway.
Merge pull request #2346 from mhvk/time-location-doc-touchup

EarthLocation touchup's, mostly in documentation
Merge pull request #2365 from hamogu/cleanupascii

Change "io.ascii as asciitable" imports to ascii
io.ascii.ui: typo in Error mesage?

I think this is just a typo. If not, then I don't understand what it means.
fix sphinx warning

sphinx labels have to come *immediately* before the section heading.
__repr__ method in Table now also returns the units

updated doctests (for __repr__ table)

updated doctests (for __repr__ table), corrected

modifying table_repr_method

show units only when atleast one column is not None. + doctests updated.

show units only when atleast one column not None. + doctests updated.

removed quotes from 'None'.

some code standardization

added test for repr method, updated changes.rst

added doctest for repr method, updated chages.rst
Added support for inputting units