Fix typo in doc string

uncertaintys -> uncertainties
Whitespace
fix for warning that says "automodapi" when it should be "automodsumm"
Added "automodapi_writereprocessed" option to automodapi
added newline to end of file
Merge branch 'unit/pickling-quantities' of https://github.com/mdboom/astropy into mdboom-unit/pickling-quantities
removed unused unit
Expanded spectral() equivalencies to include angular wave number.
Added note to change log.
Merge pull request #1961 from ryanfox/wrap-angle-pickling

Fix for #1942.  Added pickling test class for coordinates as well
Merge pull request #1981 from mdboom/wcs/lattyp

Rebase of #1463
Merge pull request #1982 from mdboom/misc/did_you_mean_fixes

Fix did_you_mean so it's properly case-insensitive
CHANGES.rst entry for #1961 (Longitude keeping wrap_angle)
Merge pull request #1984 from mhvk/longitude-pickle-changes

CHANGES.rst entry for #1961 (Longitude keeping wrap_angle)
Merge pull request #1890 from mdboom/cosmology/six

Use six for astropy.cosmology
Merge pull request #1899 from pllim/wavenum-energy

Expanded spectral() equivalencies to include angular wave number.
Merge pull request #1923 from joergdietrich/patch-1

Fix typo in doc string
Merge pull request #1975 from eteq/automodapi-write

Automodapi option to write out what automodapi is actually doing
Accept empty string/None/False as `sep` for Angle.to_string
Add test for empty string `sep` of Angle