COMPAT/BUG: compat with pytz 2014.3, exposing several test that don't localize
            properly (GH7137)
Merge pull request #7144 from jreback/tz

COMPAT/BUG: compat with pytz 2014.3, exposing several test that don't localize (GH7137)
API: Add return_type kwarg to boxplot

update docs
DOC: Use shared docstring
fix doc typos
TST: restore matplotlib defaults before testing
API: Let 'by' and groupby follow return_type

Write all the docs