Changes:
[list]
[*] Small cooldown added before energy recovers to make the tail less spamable
[*] Spawn rate of tails now depends on existing tail density instead of a fixed timer, which makes it a bit more robust for framerate-issues
[*] Endless Mode is no longer affected by global difficulty setting
[*] Added option to change scaling quality (mostly for fullscreen)
[*] Rebalanced the volume of some sounds
[*] Game does not instantly quit when pressing back/ESC in main menu
[/list]