Fix some typos in stats docs
Remove broken link

One of the link containing more information on the function `super()`
was broken. Fixes #1376
Merge pull request #40 from mdboom/docs/disable-remote-doctests

Add REMOTE flag to doctests so we can disable tests that require remote data
Renamed doctest +REMOTE option to +REMOTE_DATA
Update CHANGES.rst

Fixed extra indentation
Merge pull request #1843 from astrofrog/disable-remote-doctest

Skip doctests that require a remote server
Merge pull request #1819 from gabraganca/super_docs

Remove broken link
Merge pull request #1845 from mdboom/wcs/hide-warning-in-printwcs

Remove spurious warning from printwcs
Minor repr() and str() formatting tweak for dimensionless Quantities: Don't insert a superfluous space after the value if there is no unit.
Added changelog entry
Merge pull request #1824 from cdeil/stats_docstrings

Fix some typos in stats docs
Merge pull request #1772 from embray/quantity-formatting-nit

Minor repr() and str() formatting tweak for dimensionless Quantities
Add `translate_units` kwarg that can delegate down to `fix`.
Fix reporting of which CUNITn element was changed by unitfix
Fix error reporting in Wcsprm.to_header