MQTT Support, Rover Scan, Pzem Shunt

This release adds beta MQTT support, a way to scan for the Rover's modbus address in rover-setup, and pzem shunt support. All these features are currently not documented

All

• SolarThing will crash if your database config has unknown values in it (this will alert you to typos in your config)
• mqtt is a supported database

Rover-setup

• In the rover setup program, you can type something like scan 1 20 to check to see if the Rover's address is from 1 to 20. Note that it takes about 2 seconds per address to check, so a scan from 1 to 20 takes about 40 seconds.

Request

• There is now working support for Pzem shunts.