Edit: now a bug-fix only update has been added, Slic3r++_2.2.50.1_win64_20200602
, from the stable branch.

new & changes

Voron v2 settings (work in progress, contribution to the settings are welcome). they doesn't use the PRINT_START nor PRINT_END macro, as it's easier to modify them directly in the slicer if needed. Thanks to Jasperkm from the voron discord for the build plate model & texture.
#199 you can now use the machine limits tab even without a marlin firmware, and you have a "time estimation compensation" setting to help rectify errors (because slic3r++ will use the marlin path planning anyway).
#178 you can now apply an offset to the brim to create a weaker link between it and the objects.
#186 now brim settings can be applied per-object and not only for the whole platter.
#205 thin walls have now their own color in the preview.
#205 thin walls now have a specific speed setting.
#224 setting to force one skirt with "complete objects individually" (see issue for windows users, not visible)
#213 You can now set the brim width of the wipe tower. The brim will now be printed with first layer width. You may need to move a bit the tower to refresh the brim in 3D editor view.
#123 now print the weight & length for each color change.

bugfixes

less gapfill dotted lines in curves.
thumbnails now works #222
labels for modifiers settings are now correctly displayed.
#210 brim & skirt should now use the correct extruder when printing multiple objects with different extruders (or not).
some typos
#215 bridge speed available even without infill.
#208 less holes in the object because of thin walls / overlapping perimeters interactions
#204 2 bottom infill pattern label were swapped

Macos & Linux build will be attached below in some hours, after the compilation process ends.