Version 2.3-beta1

feat: make hostname configurable
feat: make API sensor update frequency configurable
feat: Add DemandFlow/QualityFlow and HRU eco/350 settings and labels
feat: Add virtual remote buttons to API
feat: Include support for RFT-RV and RFT-CO2 remotes (full join handshake not possible yet)
feat: Add remote hum/temp/co2/battery to html api
feat: Decode 31D9 message
feat: Improve I2C reliability (please test)
feat: Mutex i2c tasks
feat: Add last command, command origin + timestamp to API
fix: provide don't save config checkbox before reboot (otherwise changes using the file system editor were overwritten on reboot)
fix: status page could keep updating even if page was left