I just received my first PCBs designed with LibrePCB from Aisler. It is a simple Servo-Tester as it is typically used for testing servos for a model aircraft. A special feature of the design is, that you can optionally mount a potentiometer or a an incremental encoder at the same place of the board. I created a special footprint and a special symbol for this purpose.
Top side with incremental encoder
Bottom side
Potentiometer instead of incremental encoder.
rgds Gerd