Although I'm calling this a minor version, I'm actually really excited about this one, because I've been painstakingly tuning the game lately, and I feel that this update improves playability so much that it deserves its own major release number. However, I'm keeping those for big features, so I hope you'll forgive me and just enjoy the game! Please let me know what you think in the comments!

Player-visible changes

• Missiles will no longer explode upon colliding with explosions. This eliminates the problem of chain explosions, which I liked in the abstract, but in practice it just made the game feel more random than it really needs to be.
• Added some entropy to the powerup allocation process, and spread out the available powerups across a wider range of rounds. This made the powerup process feel more natural and challenging.
• Reduced the frequency of the Extra Ship Powerup. I felt this one was getting out of control.
• Increased the supercooler cooldown time from 0.1s to 0.11s.
• Defer the start of multiple saucers.
• Fixed a bug in the shield meter.