as part of the recent porting of GGhart to pyjamas, a massive
performance gain can be had by using SVG Canvas. unfortunately, that
meant porting GWTCanvas to pyjamas as well. this is also progressing
if anyone would like to help with the porting effort and with testing,
that would be great: please contact pyjamas-dev at groups.google.com.
the IE engine uses VML, and the GWTCanvas library takes care of
providing an SVG-like interface to VML (which is rather cool).