Cloning fixes
Added a cleanup function for Arrow Stitching, since it spawns clones the same way as Warden's Call. The cleanup function is very similar to that of Warden's Call.
Changed makeParadoxClone() to not copy fov and distance_map tables from the source actor. Instead, we call ActorFOV.init() on the clone.
Updated a few comments for clarity.
NOTE: If possible, these changes could be pushed to tome-1.3 to include with v1.3.2.