Asteroidz 2.1

Has randomly generated asteroidz
Asteroidz 2.2

Does not jerk when changing from forward/backward or vice versa
Asteroidz 2.3

Use two canvas's now, performance increase and erases all tails.
Asteroidz 2.4

Asteroids spin now.
Asteroidz 2.5

Asteroids respawn once out of bounds.
Asteroidz 2.6

Asteroids spawn every 10 secs.