0.5.0 - API approaching stability!

Streamlined implementation and tidied up API - I don't expect to modify it further

0.4.1

I didn't properly update the docstrings in the last release! Now fixed

Full Changelog: 0.4.0...0.4.1

0.4.0 - acceptable implementation

Working and I'm fine with the way it's implemented. Now available on PyPi!