* Fix: File open issue on Mac OS Catalina
* Fix: Can't install firmware on micro:bit and AdaFruit boards on Mac OS Catalina
* Define Circuit Playground Express pin 15 to disable the speaker
* Servo library: adjust angle block to better match Feetech micro servos
* Servo library: remove optional "reversed" parameter (based on workshop testing)
* Neopixel library: add range check to "set neopixel to color"