better sorting of holes, per part this time...
fixing a bit conversion of polygon/shapley, has to be tested...
fixed spindle in exporting multiple files.
minor bugs and decrease default simulation detail - simulates of course
4x faster(at least)
most users probably won't go into this setting, and default detail was
really too good for simulation.
waterline mess
trying to fix waterline a bit.
-removed some debugging comments
-fixed a bug with alignment - all cutouts and silhouettes were offest by amout of 2 pixels! This was introduced with another fix