v0.2.0 rev270
- Heltec board issues resolved
- Some documentation issues fixed
- New CM1106_UART library from @jcomas
- Tested on CM1106 devices: cm1106 and cm1106sl-ns models by @roberbike
- migrated old implementation to new with self serial reads
- tested in real CM1106 device
- tested in real CM1106SL-NS device