v0.9.0.3
Revised EoN state machine
Improved MQTT Diagnosis feedback messages in sparkplug log (MQTTErrorToString)
Todo:
-Debug the EoN for a correct behaviour when connect-disconnect-connect (statemachine works but
the underlying code needs some more debugging as expected)
-Immutable startup logging (lib version etc) is currently static(!) and gets filtered by the verbosefilter