Multiplication Puzzle 2.2

Multiplication Puzzle 2.2 has been released. It offers no code changes but does feature new Afrikaans, German, and Japanese translations.

It came to my attention that gmult does not compile with gtkmm 2.4. I am aware of the issue, it is on my TODO list, but for the meantime, you have to keep gtkmm 2.2 around against which to compile.