1.5.1

The long-awaited patch, finally released.

Bugfix:

• fix esp32 compatibility (now the library works with v2.0.2 and later)
• fix sporadic activations when the dimmer should stay fully off
• for arduino-esp32: use ARDUINO_ISR_ATTR instead of IRAM_ATTR

For developers:

• for arduino-esp32: use ets_printf to debug
• update ci

Thanks to @radzikr that started the issue #41 that led to this release and helped me in the testing process for the past 4 weeks. Thanks also to the other participants who enriched that discussion. A final thanks also to all other contributors who have been posting issues along the past years, and who have never received an on-time reply: I'm catching up and evaluating the backlog to improve this project.