Quick follow up!

Quick follow up to the previous update.

I may or may not (let's not pin the blame on anyone unfairly) have caused a few issues with the previous update. By that, I mean that I have. I accidently deleted the title screen spaceship image, causing a white box to appear instead. This has been fixed.

I also was still irritated by the progression of the shield, and have now cause the increase to go up by multiplying the previous value by 1.75. Before, the previous value was multiplied by another number, then added back onto itself (essentially increasing by more than double each time). This is now completely fixed (hurrah!).

Thanks for reading, and hopefully the game will be a lot more enjoyable,

Chris.