Check symbol for duplicate graphic elements (#37)
Created by: cpresser
Introduce new rule S3.9 to check if the symbol has duplicate graphical elements.
This implements the 'SIMPLE' approach mentioned here: See https://github.com/KiCad/kicad-library-utils/issues/37
So far there is no 'written' Rule for KLC yet. If there is some positive feedback for this patch, I can create a PR for that as well.
Edited by cpresser