Kaifareader 0.6

• mqtt: only execute if configured (thanks to @boredomwontgetus)

Kaifareader 0.5

• added MQTT (thanks to @boredomwontgetus)

Kaifareader 0.4

• rework parser (thanks to @kitzler-walli)
• support of EVN telegrams (thanks to @dbeinder)
• supplier classes for each supplier

Kaifareader 0.3

• reworked serial stream parsing

Kaifareader 0.2

• read out Kaifa MA309
• systemd service
• logging to /var/log/kaifareader
• export for solarview (d0) implemented

tested on Raspbian 10 (buster)