Playtesting Notes

- increased turning speed

- added an animation to the boost sprite to make its function more clear

- implemented reverse thrust for competitive mode

- implemented logic so that you won't reset when you're out of fuel if your current path will bring you to fuel

- added animation for turning left and right and for going backward

- reduced bounce on asteroids and made the collision system for asteroids more intuitive

- added a grace zone at the bottom of the screen where fuel automatically replenishes

- added a co-op mode where either player controls a single booster of a ship