Release for CircuitPython 0.9.0

This release is a small update to work with the latest 0.9.0 CircuitPython release. You must use this version of the library with CircuitPython 0.9.0 and higher, it will not work with earlier versions (incompatible API change)!

Release for Travis CI mpy generation.

0.0.2

Add travis config for MPY generation.

0.0.1

Initial release for inclusion in the driver bundle.