Makes it so FOREST entities can have squirrel people. Each forest civilization will choose between elves, red squirrel people, gray squirrel people, or flying squirrel people (who can't actually fly) at world gen. Mechanically they should do all the same things as elves, so don't trade wood to them!

Compatibility: Should work with anything that doesn't outright remove the elf civ or squirrel people. Changes made to elf civilizations should automatically also apply to squirrel civilizations. If you have a mod that makes elves playable you can also play as squirrel people. If there's a mod that cuts the "FOREST" entity and replaces it with their own, as long as the new one is still called "FOREST" it should be compatible - just load this mod after that one.