Adds neco-arc to the rim as a highly trainable (and pilkable) entity!
The Necos should be available in every biome and/or should be available from traders with some regularity. The resources they provide as well as their efficiency in combat is slightly above what you'd expect from most animals, but it's not overtuned TOO much (probably).
If you have any questions or feedback please feel free to post a comment, I'm open to tweaking things or (potentially) expanding on them.
