prepare 3.12.1
Use "delay-apply" mode for GSettings

By delaying the settings, we will not lose any values within the current
session.

https://bugzilla.gnome.org/show_bug.cgi?id=727191
Never pause the game before it has begun

Clicking outside the window incorrectly results in the New Game button
being replaced with the Play button, which both pauses and resumes the
game. Oops.

https://bugzilla.gnome.org/show_bug.cgi?id=728305