matplotlib Code

Don't use fancy Unicode on a narrow Python build.

Deal with markers correctly for interpolating transformations. (Thanks Jae-Joon Lee for finding this.)

commented out seterr in npy -- ma looks broken here

restored axes frame, made patch edge invisible

added missing coverage report to backend driver

fix backend driver typo

commented out wide unicode line in stix example until we have a conditional check for wide char support

Added optional C and reduce_C_function arguments to axes.hexbin().

more broken example fixes

fixed a couple of examples