2021-05-04: 2.0.0 (1a48ca7)
- Initial version

2021-05-25: 2.0.1 (81326cd)
- Add API for GPIO State callback

2021-06-23: 2.0.2 (e032398)
- Make sure default direction is "forward"

2022-04-08: 2.0.3 (dce894e)
- Fix bug in AllData-Callback period handling