Pypck

Bugfixes
- Fix setting relative variable values for Celisius, Kelvin, Fahrenheit and degrees.

Other
- Remove support for Python 3.8
- Update code to >=Python 3.9

What's Changed
* Fix CI by alengwenus in https://github.com/alengwenus/pypck/pull/99
* Fix setting relative variable change by alengwenus in https://github.com/alengwenus/pypck/pull/98
* Bump to 0.7.16 by alengwenus in https://github.com/alengwenus/pypck/pull/100


**Full Changelog**: https://github.com/alengwenus/pypck/compare/0.7.15...0.7.16

Improvements
- Add status message handler for code lock codes.
- Add battery status (full/weak) to transmitter's status handler.

Bugfixes
- Fix transmitter status message handler that responded only when battery was weak.

Bugfixes
- Instead of sending messages with acknowledge requests concurrently, the process now makes sure that they are handled sequentially.

Bugfixes
- Fix message parsing for threshold responses from old modules

Other
- Exception handling for unknown hardware types
- Excpetion handling for PCK decode errors
- Add test support for Python 3.10
- Set default GIT CI Environment to Python 3.9

Improvements
- Possiblity to register general input callbacks not bound to a device.