whitespace
update overview.rst to better reflect current affiliated package scheme
typo fixes pointed out by @mdboom and @pllim
Change language such that affiliated packages should go to astropy-dev
typo fix and minor clarification
Normalized wrapping to 72 chars
Merge pull request #1996 from eteq/update-overview-affiliated

Update overview discussion of affiliated packages
don't run doctests with -t option
Update bundled six to 1.5.2
Added GitHub issue number
Merge pull request #2004 from eteq/test-path-no-doctests

don't run doctests when -t option given
Merge pull request #2006 from astrofrog/update-six

Update bundled six to 1.5.2
Merge pull request #1973 from mdboom/misc/python3.4-compat

Omnibus Python 3.4 compatibility fixes
Test code with both unicode_literals and without
First pass at resolving issues when testing with/without unicode_literals
Remove redundant test_*_unicode.py files
Get FITS warning collection working again.
Move to whitelisting
Turn on unicode literal testing in select test files.
Document the TEST_UNICODE_LITERALS tag.