minor change to mplconfig module
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.
