Grow narrow infill regions into void - to be tested more
Fix narrow fills growing
Merge branch 'master' into grow-narrow
Merge branch 'master' into grow-narrow
Merge branch 'master' into grow-narrow
New wipe feature
Merge branch 'master' into grow-narrow

Conflicts:
	lib/Slic3r/Fill.pm
	lib/Slic3r/Print/Object.pm
Merge branch 'grow-narrow' of github.com:alexrj/Slic3r into grow-narrow
$surface->thickness was erroneously defaulting to 1 mm
Bugfix: horizontal projection for high-res models might show corrupted result
Don't exclude any infill under internal bridges; revert infill pattern to rectilinear for internal bridges. #240
Merge branch 'grow-narrow'
Bugfix: artifacts near walls. #1049
Fix test framework detecting dE=0 as retraction
Remove the 'simplify' handle in ExtrusionPath after the recent refactoring. #1054
Fix t/retraction.t after the recent change to the first_layer_height default
Merge branch 'master' into wipe
Add wipe in GUI
Added "known" as a valid model file type
   => 'Known files (*.stl, *.obj, *.amf)|*.stl;*.STL;*.obj;*.OBJ;*.amf;*.AMF;*.xml;*.XML',

When dialog pops up, it can see ALL known file types instead of only stl.
Respect perimeter/infill order when multiple extruders are configured but only one is used