In addition to the development on the simple_controller gem, I published version v2.2 of my mark average computer. It supports now the CTRL+S shortcut for saving and visualizes the mark average development during your studies. Further, I simplified and improved the code to allow an easier maintaining.

Finally, I plan to publish the code as open source when the code refactoring is completed. The jar can be found here and further instructions and details are available here.