2012-11-06: 1.0.0 (d803639)
- Initial version

2013-01-17: 2.0.0 (f264528)
- Support for Protocol 2.0

2013-08-28: 2.0.1 (da024aa)
- Add edge counters for all pins

2015-10-13: 2.0.2 (47b118b)
- Fix interrupt callback for grouped pins 8 to 15