cleanly on Windows & Linux. There is still a work on OSX:
The XS module has to be linked without perl.lib and with
the following parameters to produce a bundle: -bundle -undefined dynamic_lookup
Added UNUSED macro to libslic3r.h, used it to reduce some compile warnings.
Split the Int128 class from Clipper library to a separate file,
extended Int128 with intrinsic types wherever possible for performance,
added new geometric predicates.
Added a draft of new FillRectilinear3, which should reduce overfill near the perimeters in the future.