Follow PEP8 and split the import over two lines
And line numbers in example still makes sense
Merge pull request #1937 from mhvk/quantity-known-issues

Add "known issue" for quantities sometimes losing their units
Upgrade to wcslib 4.20
Actually bump up version number.
Move astropy.convolution to using six
Remove debugging print statements
Update CHANGES.rst
Merge pull request #1949 from taldcroft/ascii/uni-lit

Allow passing unicode delimiters in io.ascii read and write
minor typo in coordinates docs
Merge pull request #1951 from mdboom/wcs/upgrade-4.20

Upgrade wcslib to 4.20
Update to pytest 2.5.1
Fix failures on Python 3.x
Merge pull request #1965 from adrn/docs-typo

Fix minor typo in coordinates docs
updated Longitude and Quantity to properly use super().
Pickle the whole Quantity __dict__
Clarify the GPS format in the docstring
Tweak docstring per @eteq suggestions
Merge pull request #1879 from taldcroft/time-gps-doc

Update docstring for GPS time format to clarify meaning of this format
Fix compilation on Python 3.4