Did a bunch of changes in preparation of a major release:

• Invested loads of time in debugging the collision detection and fixing some errors where bullets would fly straight through actors without hitting them.
• Tanks are real collidables now and thus vulnerable to Vulcan rounds.
• External observer that works even in pause mode (press 'V' to switch to external view). While in external view,use mouse to look around. Moving the mouse forward and backward with the left mouse button held down will accelerate. Moving with the right mouse button held down will move to the side.Pressing the mouse wheel or middle button will stop the observer.
  

Want to give it a try? Get it from the darcs repository! The version has been tagged "070526".