Added Travis CI badge and note about 2.6 release to docs
1.3.3
Some code reorganization and updating of common string routines.
1.3.2
Initiated external CI with Travis. Dropped Python 2.6 from official support given issues getting it running on Travis (though it actually does work).
1.3.0
First release of integrated sequence joining. ``join``, ``word_join``, ``and_join``, ``or_join``, ``joinlines``, and ``items`` are functional and tested, but still less mature than the rest of the codebase.
1.2.0
Institutes full named styles within each quoting class. Tests and docs tweaked. Embedded ``nulltype`` module withdrawn in favor of full ``nulltype`` imported by ``options``.
1.1.4
Experimental switch to YAML format for change log. Some setup, testing, and config updates.