First commit for pause-menu branch
Added menu system and partial pause menus
Also refactored wrapper state management some more
Made all sounds pause when entering pause menu
Implemented settings saving/loading and mute
Merge branch 'master' into pause-menu
To get bug fixes
Fully implemented mute setting
Added explicit declaration of write directory
Compensated for what appears to be a LÖVE bug
Changing the master volume doesn't affect paused sources :O