Write tests for packet.UnmarshalJSON
Write tests for packet.UnmarshalJSON

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