Lightweight low power library for AVR/SAMD21 Moteino boards.By Felix Rusu, LowPowerLab.comForked from Low-Power.Date: 08-08-2018Devices Supported:ATMega168ATMega328PATMega32U4ATMega644PATMega1284PATMega2560ATMega256RFR2ATSAMD21