Two new things.
1. Figured out how to make a custom options page and fill it with custom options (and they're saved between plays and can affect the game as per their description). This should be useful when people start making mods.
2. Made an in-game GameObject hierarchy browser and components inspector. This is very useful for figuring out what goes where, has what components, has what values, etc. Used to take hours to properly inspect certain things through debug. Now it's instantaneous. Can toggle gameobjects on/off to see if you're on the gameobject that you think you are. Will probably make components' fields editable in the future.