Add support for hamlib for rotor control

[fab4space]

In addition to servo motor, a nice feature would be to add also support for hamlib via TCP for rotor control (basic version can just send Position commands for alt/az):
http://manpages.ubuntu.com/manpages/xenial/man8/rotctld.8.html
This will allow to control all the rotors which are supported by hamlib!

[hazrmard]

Thanks for the suggestion. I am not familiar with hamlib but it sounds like a good feature to add. I cannot say when (or if) I'll be able to do anything, but you are most welcome to fork this and send in a pull request.
sattrack/sattrack.py defines ServoController class which has 2 instances of Motor objects. The SatTrack class instantiates the controller and gets 2 motors from it (see SatTrack.connect_servos()). You can change the controller class with a TCP option which attaches similar motor objects to its instances but which use hamlib. You'd want to make sure that aside from their connection, the motor objects have the same signature (i.e. motor functions and attributes) so the main package's interface to the motors is unchanged. Cheers!

[fab4space]

Thanks for your proposition! Ok I don't know when exactly but I will try to add this feature based on your advice. Many thanks and congratulations for this awesome software!!