Document barh change in API_CHANGES.
Change barh to take a kwargs dict and pass it to bar.
Fix sf bug #1656912 (mathtext \leftarrow and \rightarrow were switched)
Added pdf.inheritcolor rc parameter.
Improve python 2.3 compatibility in pdf backend
Don't append to ax.lines in Legend._auto_legend_data()
CODING_GUIDE: point out that popd is obsolete.
Prevent building _wxagg.so with broken Mac OS X wxPython.
nib file was corrupt
Require setuptools for Python 2.3.