Windows is a first class CI citizen
`.format` syntax everywhere

https://docs.python.org/2/library/stdtypes.html#str.format
Log instead of print
Single quotes where it makes sense

Update coding standards
Fixes #204
Spurious import
Switch to using py.test
Merge pull request #311 from michaeljoseph/windows-ci-support

Windows is a first class CI citizen
Merge pull request #312 from michaeljoseph/cleanup-strings

Cleanup strings
Update the history.
Merge pull request #319 from pfmoore/switch_to_pytest

Switch to using py.test
Merge upstream