Graphic shapes (lines, arcs, rectangles, polygons) can now have nets assigned just like tracks.
This allows creating custom copper shapes without having to define them as custom pads inside a footprint.
This is handy for various reasons, for example if you want to define a copper polygon on the board to connect some pads together but don’t want it to be a filled zone (because you do not want it to ever keep clearance from anything like a zone would)
