antfarmar

Added another particle system explosion prefab `ExplosionShip`. It is for ship explosions. Both the PS and AudioSource components are set to play on Awake, so no script is needed. They...

`ExplosionShip`particle systems are still one-time Instantiations & Destroys, but now make use of the `ExplosionBehaviour` script so that they may be handled similar to asteroid explosions in code.

Various power-ups & a star system particle background implemented. - First stable commit b9c0cbd in branch `development`.

#### Fire Powerup Stacking Could stack firing powerups using a delegate multicast on the `Shoot()` methods.

Nothing major, but don't you think it would better to have a single centralized location for these strings? - Easier to make changes. Automated process. - IDE 'Refactor/Rename' vs. 'Search...