Update AMF export code
Reflect max_fan_speed in cooling textual description. #1439
Meaningful error when user wants to use 3D preview but didn't install the required modules.
Update brim generation code. Includes regression test. #1440
Prune tiny shells to avoid random extra internal solid infill. #1431
Fix broken logic in $ARGV[0] check.
Merge remote-tracking branch 'upstream/master'
Clean medial axis code and gap fill
Fix regression in start perimeters at non-overhangs. #1442
Some cleanup for the Voronoi code
New experimental medial axis code (suboptimal but looks good)
Fix wrong bridge flow used for overhangs and bridge perimeters. Includes regression test. #1407
Fix an overflow point causing wrong chained path
Merge remote-tracking branch 'upstream/master'