Correct Z positioning of multiple objects in 3D plater
Bugfix: ignore only_retract_when_crossing_perimeters when fill_density = 0
Fixed minor regression in cut dialog
Change default layer height to 0.3mm
Relax collision checks when Detect thin walls is disabled
Bugfix: some extra spots were added in medial axis
Display skirt and brim in toolpaths preview. Also take support material margin into account when sizing the window. #2169
Put skirt outside brim to avoid conflicts. #2157
Allow configuration of G-code origin for rectangular bed shape
Bugfix: seam_position = aligned/nearest didn't work correctly for hi-res models. #2156

Conflicts:

	lib/Slic3r/GCode.pm
Merge branch 'master' of https://github.com/alexrj/Slic3r into filter