* Starting on #1491: use 'startNotifications' instead of 'read'. Still need to make backwards compatible.
* Fixing #1489: WeDo2 set light color block should wrap values to 0-100.
* Fixing #1488: WeDo2 should not clear LED light on stop button.
* Fixing to support negative LED light color inputs.
* Removing a binding.
* Using wrapClamp for inputHue for LED color block.
* Adding WeDo2 connection/disconnection over Scratch Link BLE.
* Testing motor and LED output.
* Reading sensor attachment and registering for sensor notifications.
* Motor indexing.
* Some refactoring notes. Moving some functions around.
* Refactoring and enums.
* Removing some comments
* Fixing linting error.
* Fixing tilt reporter values and added stopAll bound to stop button to stop piezo, LED and motors.
* Add motor rotate, without coasting yet. Fixed some todos.
* Removing logging.
* Implemented motor set position, motor set power, and beep note for time blocks. Changed labels on motor blocks. Tracking motor speeds for all ports.
* Fixing motor ports to 0-3 and then output bit field when sending commands.
* Added stop all motors with stop button. Added port masking function. Some cleanup. Moved beeping up an octave.
* Combine device list polling and sensor polling into a single timeout call, device list requested every 20 times.
* Don't reset sensors on device update. Don't store undefined sensor/motor values. Some comments.
* Fixing some linting.