Add pypy3 to Travis
Use Travis' SVG badge
Move testing to unittest2
Tweak releasing instructions
Make sure Travis is using the newest dependency versions
Explicitly list tests_require for Travis
Refactor dev requirements list
Force the newest dev dependency releases
Testing something for Travis

If this works it will be annoying
Don't worry when closing the XML-RPC connection fails

It’s Python 2.6-specific and only shows up under Travis
Bump version numbers for a 2.2.0 release