Cooperative Advancements

This version now synchronizes all advancement criteria instead of just complete/not complete status. What that means is you can now cooperatively work on multi-part advancements, like exploring all biomes (Adventuring Time) or killing all mobs (Monsters Hunted)! This is a large code change for the mod so it will be released as beta in case of bugs. It's a ton of fun working on those big advancements with friends!