properly remove inner and loose nodes
added run configuration
using run configuration
don't clip vertices with non-red adj edges
force additional flips after strips
print mesh statistics
Revert "don't paint flipped edges blue"

This reverts commit 03af2d852f6fff59d0869c10a8395caa023b5368.
use run config in stripping phase
reordered output

checkhull takes some time
added 'halt before stitching' button
improved stitching method
typo caused inconsistend coloring
removed wrong assertion

vertices can have more than 2 red edges after clipping
if they have also have black edges
removed wrong assertion