Added more pack monster spawns.
Removed effect of sound on dynamic spawning.
Added Shia back to the game, gave him similar spawning to jabberwocky but rarer
Accidently spawned more jabberwocks instead of shias. Fixed.
Merge branch 'master' into spawn_changes
Fixed typoed pack_size as pack-size
Reduced quantity based on pack size.
Merge in some monster changes.
Merge ALL of the PR.
Yank some dead code.