The Butterfly Effect Milestone B is the second release from github.
It is mostly finishing up on things that were already halfway implemented.
- make the level creator work again and actually usable (read the README!)
- several new objects, including Pingus, Cardboard Box, and Seesaw
- more than 20 new levels, plus fixing all existing ones
- switch to Qt5
- run-time switching between languages
- translations now also available for levels
- fixing many many inconsistencies and small issues
- OS X support, but for now only works on OS X El Capitan
Note that this still is a pre-release, we plan to overhaul the GUI in Milestone C.