### Low-Power Lightweight low power library for Arduino. Version: 1.80 Date: 04-10-2018 Devices Supported: * ATMega88 * ATMega168 * ATMega168P * ATMega328P * ATMega32U4 * ATMega644P * ATMega1284P * ATMega2560 * ATMega256RFR2 * ATSAMD21G18A ####Notes: External interrupt during standby on ATSAMD21G18A requires a patch to the Arduino SAMD Core in order for it to work. Fix is provided by this particular pull request.