Allow the use of non-local ReadMe files in the CDS reader
Documentation of the CDS reader class updated
General documentation updated with an example of the load of CDS tables using URLs
Make ellipsoid a property with a setter; add tests; use _new_view
Add docstring to ellipsoid
Further tests/changes following comments by @cdeil
Prevent VOTable validator from crashing when system sends SIGKILL during xmllint.
sip_pix2foc should subtract crpix and the end, and sip_foc2pix should do
the inverse.
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
Added test for units and corresponding data file
Removed unnecessary statement
Added support for inputting column description as well
Included test file in setup_package