* Resolving #1492: No longer trying to make WeDo2 backwards compatible with Scratch Link API v1.0.
* Closing the socket on all BLE/BT errors.
* Adding BT disconnection.
* 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.