bar plotting patch by Michael Forbes
remove a print statement in mplconfig
install matplotlib.conf in mpl-data for config package
Improve vertical alignment of large delimiters and n-ary operators.
Fix mathtext bug when svg.embed_char_paths is False
Fix numpification typo affecting mathtext output with Cairo backend.
Improving spacing operators.
minor changes to traited configs
Various minor bugfixes.
Ability to use new, traited configuration system in mpl
