White screen on M5stack Fire
First of all I would like to thank you Matt for this great piece of software.

Sadly the latest releases v0.07 and v0.07.1 are not working anymore on my M5stack Fire.
Going back to v0.06 everything is fine.

With latest version I first noticed, that display turns 180°.
Additional parameter in config.json "screenRotationAngle": 1 solved this, but after a few minutes of operation the display turns to white screen. Reboot doesn't solve the problem. 
Only flashing v0.06 recovers normal operation again.

