Lose, Life, Shield, Reset, Pause, Misc

-You can now lose the game when your life is at 0!
-You have a shield, basically your 1 free shot!
-You can reset the game, finally!
-Pause option, yippee!
-You can now only shoot 3 "bullets" a second
-Background scrolls! Adds to the "realism"?
ToDo
-Never got around to adding the lasers, did I?
-Mob health?
-Shield Regen?
-Power ups?