Skirmish Mode
In a skirmish you decide:
- The AI to fight (random, balanced, rush or boom)
- The cruiser the AI uses (random, or one of the eight cruisers)
- The cruiser you use (random, or one of the eight cruisers)
- The difficulty (easy, normal, hard or harder)

Unlike in the campaign you won't know which strategy the AI will use!

Other Improvements
- Remember help label toggle (question mark) state between levels
- Improve Options screen UI
Balancing
- Destroyer
- Increase build time from 80 to 100 seconds
- Reduce air turret range from 20 to 18
- Reduce SAM site range from 25 to 20
- Reduce SAM site burst size from 3 to 2
- Reduce Mann o` War built time from 360 to 300 seconds
