Added the Destructors for bullets, moveable objects, and Rides.
Merge branch 'master' of https://github.com/encephalopathy/wepwep
Haters now can hold their own weapons.
DoubleshotWeapon.lua and SingleshotWeapon.lua both rotate bullets and have their bullets spawn in the correct place.
Abstracted out the gun firing location to be located in the weapon class.
Slowed down the scrolling background a bit.  Bullets don't rotate correctly due to how the haters are oriented the opposite way of the player bullet.  Will fix that in my next commit.