Whew! Ok, this is probably the last change before the jam ends. I need to rest!

Changelog

• added basic options menu
• added experimental “light theme” with shaders
• fixed some inconsistencies and bugs in menu navigation
• put upgrades into categories with consistent colors and icons
• added some new buffs that can apply to enemies
• added one new enemy formation
• changed how Spread Shot works for the Saucer ship
• replaced a shrill sound effect