Conditional compilation to exclude all Perl/XS stuff from C++ code
Minor optimizations
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.