Gamefeel week 2

Final changes week 2

---GAME CHANGES

-jump deceleration fixed

-weird wall bump fixed

---MENU

-buttons: play, config, credits, quit -- all with their respective screens

-animated backgrounds -- new one per screen

-fade transition

-functioning volume slider

-navigate with keyboard + adjust volume slider with keyboard

-WebGL cant quit the game like .exe can, so I linked my paypal instead

-music + sfx

-audio mutes when unfocused