Eeschema shows background fills on a different z-level than the rest of
the symbols/elements. Print the backgrounds prior to the foregrounds in
order to preserve this view for print output
Fixes https://gitlab.com/kicad/code/kicad/issues/12559
Using arc angles to plot an arc is really error prone due to different
options between plotters, and angles defined in Kicad, using this version of
arc plotting from Kicad is no longer allowed in Kicad code.
The start/end point plotting is not reliable for eeschema. We need to
preconvert to angles to get the correct winding as the default plotter
conversion in the PLOTTER class makes pcbnew-based assumptions
Fixes https://gitlab.com/kicad/code/kicad/issues/11885
Make "don't stroke" an explicit property in the GUI.
Silently enforce line width to >= 0 when stroking.
Make layouts between dialogs more consistent.
Interpret unspecified fill colour as layer colour.
Fixes https://gitlab.com/kicad/code/kicad/issues/11279
Also fixes some plot bugs with arcs.
Also moves polygonization of arcs (when required) in plotting code
from 5 degrees to calculated based on ARC_HIGH_DEF.
Fixes https://gitlab.com/kicad/code/kicad/issues/5017
ADDED arc, circle and rectangle shapes for schematic. Shapes support
line styles and fill colors.
CHANGED sheet background color in Edit Text & Graphics Properties to
fill color (and it now affects shapes).
Pushed STROKE_PARAMS down into common and moved all shapes to using it
for stroke descriptions.