Bug fixes
- SX126x/8x: Also use PREAMBLE_DETECTED IRQ flag for actively receiving check by @GUVWAF in #2349
- Fix rak4631_epaper PIN_EINK_EN by @andrekir in #2346
Enhancements
- Implement shutdown (deep sleep forever) on ESP32 by @caveman99 in #2352
Full Changelog: v2.1.1.dc2ca9c...v2.1.2.6d20215