Kahn changelog

in progress

2022-07-28 0.0.1

Fix UDP message encoding
Improve error handling
Fix sending to UDP broadcast address
Improve software tests, add CI/GHA

2022-07-25 0.0.0

Add project boilerplate
Add program layout with command line entrypoint kahn forward
Add documentation
Add basic engine for forwarding NMEA-0183 sentences from Serial to UDP