This is a bug fix release
* rotated text with newlines at all angles should work correctly now
* fixed errorbar autoscaling and capsize problem
* right tick labels now in correct position
* Added Gary's errorbar color options
* fixed some problems relating to singleton plots and constant plots
* Tweaked TkAgg backend so that canvas.draw() works more like the
other backends. Fixed a bug resulting in 2 draws per figure
manager show().
* several small optimizations to improve framerates on animated
plots.
* fixed a gtkagg on win98/winME bug
* added converter=None option to plot_date for dates already in epoch
format
* made the figure background transparent in agg so matplotlib output
can overlay another canvas.
http://sourceforge.net/project/showfiles.php?group_id=80706&package_id=82474&release_id=241494