Added last-resort ring draw with quads

Ring draw: maintain separate polygons for the ring circles and draw them separately of the ring fill to prevent artifact lines from being drawn

Removed the List -> QList alias, use QList directly

removed the List class in favor of QList

removed debug prints from the ring finder

ring finder integrated! it lives!

Finally got the ringfinder working! Working on integrating it to ring drawing...

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mercurial