matplotlib/matplotlib — pull request #3662 by switham (2014-10-17 18:15:29+00:00)
Title: Make all classes new-style.

The theory is, the code already worked in Python 3 where all classes are new-style.

Changed class definitions in *.py (only) in the whole tree, including

examples
lib/matplotlib/testing
lib/matplotlib/tests
lib/mpl_toolkits

Take it away, Travis.