This is a strict subset of Motor, covering functionality of DC motors only. This is useful for motors without encoders, such as train motors.
It is inherited by Motor, which adds functionality that requires encoders.
By moving some of the technical details to dedicated sections of the docs, we can add more (or simplified, less technical) information without cluttering the API commands.
Because this module describes devices that can be built into a hub or other device.
Since this design is now explicitly shown in
the docs as well, we don't need to hide this
module in the package.
Laurens Valk