Ignore differences between 32-bit and 64-bit ints
Fix equality for array coordinates

Closes #1832
Added test for #1832 failure mode
Add test for #2037 failure mode
update changelog
Get `Longitude` sign to come out right from `wrap_angle` when 0

Closes #2037
Fix test that incorrectly had '-0h00m00s 0d00m00s' and similar
Ignore long int suffix in doctests, e.g. 1234L
Make astropy.io.registry and astropy.io.misc compatible with Python 2 and 3 using six
Avoid double copy of data in registry
Added future imports
Use zip from six to avoid duplicate copy of data in memory
Added new Sphinx extension to auto-link issue numbers
Whitespace
add missing __all__ to convolution/core.py
Correct API module names

Make it so that the stub pages generated with automodapi have the paths
to the function or class that a user should use. For example, the Table
class now appears as astropy.table.Table rather than
astropy.table.table.Table.
Explicitly point to kernel stub pages

This is necessary under the revised automodsumm to correctly link
to already-created stub pages. It should be possible to use automodsumm with
the `:classes-only:` option, but that doesn't seem to be working.
Add patched version of viewcode sphinx extension

Using local names in autosummary fails to link to raw code with the
current released version of the viewcode sphinx extension (Sphinx v1.1.3).
This patched version fixes the problem. It can be removed once the problem
is fixed in Sphinx proper (there is an issue open).
Adjust automodsumm to truly act like `currentmodule` is in force
As suggested by @embray, make issue linking for robust by first searching for groups of issues that are enclosed in square brackets and have the form [#...], then cycle over the issues inside each group.