Library to detect a double reset, using EEPROM, DueFlashStorage, FlashStorage_SAMD, FlashStorage_STM32 or LittleFS/InternalFS for AVR, Teensy, SAM DUE, SAMD21, SAMD51, STM32F/L/H/G/WB/MP1, nRF52, RP2040-based (Nano_RP2040_Connect, RASPBERRY_PI_PICO), Portenta_H7, etc. boards. Now using efficient FlashStorage_STM32 library and supporting new STM32 core v2.0.0 as well as v1.9.0
