Fixed one bug of many in admesh library, where the face connectivity was broken when removing a degenerate face. Likely there are some similar issues left to be solved. Placed a workaround to always recalculate face connectivity before slicing.
of the upstream. Thanks @alexrj, @lordofhyphens for the original code of slic3r.cpp
The XS was left only for the unit / integration tests, and it links libslic3r only. No wxWidgets are allowed to be used from Perl starting from now.