Spread. Reactions. Shooting. See changelog for more info.

    Changelog:
     1. Shooting:
      - Shooting now damages characters.
      - Bullets now have owners so that they're not hit when shooting.
     2. Spreading:
      - Bullets now have spread when fired.
     3. Reactions:
      - Characters are now "pushed" when intersected.
      - Goes the opposite direction the "pusher" is leading.
      - Not really inneficient. Could be worse though. Could be RECURSIVE (true
      - Will work on a better (and smoother) way to do this.
      - Uses force.
      - Could use speed, but I want mass to affect reactions as well.

    Issues and Bugs:
     - Kind of inneficient way of dealing with
     - Spread is too great(?).