motors are not the only actuators

[jjehl]

Because motors are not the only actuators possible on a robot (light, tools, etc...). It could be a good thing to rename motors by actuators at the higher level. So it will be possible to subclass an actuator for example to add a light. And dynamixel motors become subclass of actuators.

[show0k]

I think also it will be an interesting thing to do. Feel free to propose a pull request if you want to begin the work.