Update Notes For June 4

[list] [*] Added a region with a speed limit to the 3rd and 4th islands. [*] Added 3 new background soundtracks. [*] Added first-person view (activated by pressing the V key). [*] Gave snakes the ability to crawl through other objects for the first few seconds after spawning. [*] Fixed music/soundtrack volume imbalance. [/list]