* Implement session persistence & more 1.1 protocol
* [LoRaW] Improve session persistence, check frame counters & Nonces, multiple MAC commands
* [LoRaWAN] fix popping MAC command from queue
I just realized that the method popMacCommand did not correctly remove items from the queue - this should solve the problem
* [LoRaWAN] implement improvements from #835
* [LoRaWAN] String --> uint8_t[]
* [LoRaWAN] Fix typo