I will probably do these sometime:

1. Add config options for rust monster foods
2. Add config options for shrieker summons

Also, this overlaps with biome-specific spawns (aka, biome dictionary support), as these would also need config options. Possibly mini-config files for each mob in a sub-folder (this is why it uses its own folder instead even though the current config doesn't warrant it).

Basic stuff done (rust monster and shrieker specials).