* Particle Ball 2.0: turn almost anything into a particle ball - planets, moons, stars, asteroids, comets, spaceships and space stations
* Particle balls keep the shape and colours of the original object
* Much smoother switch to particle balls
* New Roche limit effects: a warning rumble and shaking ground, then dust jets, billowing clouds and a deep boom at the breakup
* Various bug fixes
* Optimization