The new test system is written with py.test. These tests are more
comprehensive, run faster by an order of magnitude, and are far more
maintainable. The tests themselves conform to PEP8.
To unify the testing platform, a docker image will be used. This image
will contain all of the test system prerequisites. This should make it
easier to run tests uniformly across developer machines and Travis CI.
This image will be published at https://hub.docker.com/r/yadm/testbed/
