[issues/#45+#49] Handle Stats packet in semtech adapter
[issues/#45+#49] Handle Stats packet in semtech adapter

mgranberry/ttn,LoRaWanSoFa/ttn,TheThingsNetwork/ttn,mgranberry/ttn,LoRaWanSoFa/ttn,mgranberry/ttn,jvanmalder/ttn,jvanmalder/ttn,TheThingsNetwork/ttn,jvanmalder/ttn,TheThingsNetwork/ttn