Space Battle Live Wallpaper v1.15

  - New Weapon: Cluster Bomb!
  - New Feature: Score display when enemies killed!
  - New Feature: Disable camera scroll
  - Update: Improved settings screen appearance

This is a fun update that adds some new items and features.  In particular, there's the basics of a scoring system in place now -- if we go much further here we'll have to make this an actual playable game.  :P

Version 1.15 also adds a new weapon type in the form of the cluster bomb, which fires a single big shot that splits into eight when it reaches the top of the screen.  In addition, as a few folks requested, you can now disable camera scrolling completely.