Include an example of how to skip all doctests in a module
Should somewhat fix or at least improve the situation reported in
https://github.com/astropy/astropy/issues/2305 by ensuring that the
method (_ImageBaseHDU.update_header) responsible keeping an HDU's header
in sync with the data it represents, also makes the necessary updates to
ensure that the header contains the correct BZERO value for
pseudo-unsigned integers.
Fix a couple sets of tests in modeling. This has two problems: One was the use of parameters.values() in a context where the order of the parameter values *does* matter. The fact that it was working before was only by luck.  The other problem was that it modified global state, causing subsequent test executions to break.
Make ellipsoid a property with a setter; add tests; use _new_view
Rename calcFootprint to calc_footprint. Add an optional boolean keyword center which controls whether to use the center of the corner of the pixel.
fix docstrings
Reset the master_transform_graph after this test; included note that this should be redone in the context of #2347
Add docstring to ellipsoid
rewrite calcFootprint to call calc_footprint
correct typo in docstrings
Further tests/changes following comments by @cdeil
add tests
added an entry in CHANGES
Ignore any user config file, even when running astropy.test()
Miscellaneous things caught be clang-analyzer.
Some slight tweaks to how I wanted to handle cleanup in the compress_hdu function
Merge pull request #20 from embray/misc/clang-analyzer

Some slight tweaks to how I wanted to handle cleanup in the compress_hdu...
Add another unused assignment.
fix docstring
Update CHANGES.rst

This fix doesn't apply to the v0.3.x releases.