New option to toggle collection inverse selection. This allows
conveniently exclude a collection and select "the rest of" the scene.
Differences between collection line art usage flag:
Collection line art usage is global, used to specify e.g. if a
collection should appear in calculation at all.
Invert collection selection is used to easily select a
collection and "everything else other than that collection",
making it convenient to set up such cases.
New option to preserve contour lines when using face mark filtering.
Noise tolerant chaining. This feature takes advantage of original line
art chain which is a continuous long chain, instead of splitting it at
each occlusion change, this function tolerates short segments of
"zig-zag" occlusion incoherence and don't split the chain at these
points, thus creates a much smoother result.