0.2.27

Board fixes

• StickS3: the RTC is the RX8130; it used to be driven as a PCF8563. (by @thomas-top, #411)
• PI4IOE5V6408 IO expanders (Tab5): begin() never set the initialized flag, so isEnabled() was always false, and getInputLevel() was not implemented and always reported a failure. Both now work with checked reads. (#402)
• BMI270: wait at least 2 ms after the soft reset; the IMU could fail to initialize or read all zeros. (by @hlym123, #404)
• IP5306 (Core BASIC v2.6 / v2.7 and others): setChargeVoltage() can select the 4.4 V step; requests of 4400 mV or more stopped at 4.35 V. (#403)

Fixes

• M5.Led.getLedType() was declared but never defined, so calling it failed to link. It forwards to the active LED instance and returns led_type_unknown without one. (#405)