Allow to play original game
In original 2048, a new tile has either the value of 2 or 4 (looks like it’s 10% chance to get a 4); it would be nice to be able to play with this rules also.
- original bug: https://bugzilla.gnome.org/show_bug.cgi?id=782397
- proposed patch for original behaviour: https://bugzilla.gnome.org/attachment.cgi?id=351844