v1.0.1: M20 fixed, CRC added, etc.
Changes:
- Serial of Meteomodem M20 radiosondes is now parsed correctly
- CRC is now applied to all APRS packages before any further processing happens
- A plausibility check for the radiosonde serial is included (serial must be 4 characters or more)
- Parsing of the last parameter in an APRS package comment string is fixed
- Raw data is now written with timestamps