LoRaWAN Application framework for Arduino.
This framwork consists of Application,LoRaWAN devices and Payload Classes.
These classes provide following functions:

1. Power saving with various sleep modes.
2. Wake up by watchdog timer.
3. Interrupt handling for INT0 and INT1.
4. Task execution control.
5. LoRaWAN devices control.
6. Allow payload to be created bit by bit.