Making this a branch off of the current master as it just has fixes
since the 4.6.1 release.

Probably by mistake the call to read data from the serial port was left twice. Therefore, controlling Skywatcher mounts does not work and ends with a timeout. Otherwise, excellent work - since all Skywatcher mounts use the same motor controller firmware, it is possible to control not only Allview but all mounts from this manufacturer.

Update skywatcher.c

Added function to park the rotator.

Changed behavior for incoming requests to change position. If the motor is moving, the requests are silently ignored. Stopping the motor movement before each request to change position caused the movement from point A to point B to take a very long time because tracking applications send the dynamic position of the tracked object (e.g. satellite) in regular short intervals and in case the rotator was on the opposite side, by the time the rotator reached the position of the object, the object had traveled a considerable distance.

Update skywatcher.c - park rotator, improved rotator movement