Reconnect if serial is closed.
Removed to much log output by aggregating course messages.
Leak detection gpio adjusted
Added close command to serial comm
Changed logging output
Added shutdown workaround as long as pi feedback is not implemented.
Added demo key listener for Voltage.
Main panel is now drawn even if no location is recorded
Added warning for discarded message
Little fix on serial comm
Reduced serial speed to 57600
Added precision to map rendering
Some checksum calculation - but it's still not correct... :-(
Additional validation check
Discarded message log aggregation
Additional work on the checksum