changed .hms and .dms attributes to output a named tuple instead of a regular tuple
fixed tests to match new dms/hms
fix docstrings to reflect namedtuple dms/hms
added absdms attribute to Angle
Update changelog
whitespace
Ignore warning only on Python 3.4
update overview.rst to better reflect current affiliated package scheme
This change to itersubclasses restores some determinism to it on Python 3.4.  See https://github.com/astropy/astropy/pull/1945#issuecomment-32522217

Conflicts:
	astropy/io/fits/util.py
Fix importing argparse on Python 2.6
Fix print_code_line to respect the UNICODE_OUTPUT configuration variable.
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
Clarified in docstrings that named tuples were being returned as suggested by @cdeil
Add a negative examples case to the docs as suggested by @cdeil
Simply absolute value-taking for dms as suggested by @mhvk
Changed `absdms` to `signed_dms` as suggested by @mhvk