Do not include tests as part of package distribution

Add tests to make sure internet connection is blocked when appropriate

Configure strict remote data checking

Update README to serve as primary documentation

Remove test dependency on astropy

Port astropy data mirror update from astropy

Properly handle invalid values passed on command line

Fix broken appveyor tests

Set up CI (both travis and appveyor)

Currently there is no coverage or build documentation

Add pytest marker and associated tests for @internet_off

The test collection for the rst files formerly got rid of any rst file that included a part of t...

In pytest 3.2.0 the member `dtest` is used in the `reportinfo()`
function to report the location...

Draw tick labels atop, not beneath, gridlines in WCSAxes

Pass keyboard interrupt to pytest when using setuptools

This addresses issue [#3460] and allows pytest to teardown cleanly and
produce useful traceback ...

Add change log

pytest was (accidentally) filtering deprecation warnings raised
by lxml calling the getargspec()...

Fixes for DeprecationWarning and pytest

Astropy's test configuration turns all DeprecationWarning into
exceptions, however some of these...

(to allow keyboard interrupts)

This fixes a bug where previous options of the run_tests function will persist
into the next call.

We need to remove the kwarg from the defaults.