0.6.7 - Sound effects
* Added: exit dialog when quitting the game.
* Added: ui navigation and buttons sound effects
* Changed: a lot of new sound effects.
* Changed: can press esc/back to escape from upgrades scroll in outcome window now, that window needs some work for sure but at least the normal esc reaction works now.
0.6.6 - Demo WIP
* Added: Icons for steam and discord links.
* Changed: Show outcome window with game stats when quitting.
