- alien larvae, mice can hide under mobs
- roaches, mice can hide under various objects
- various tweaks, including flavour and existing mechanics
- fix for ghosts not being able to spawn as mice
- added move delay of half a second to simple_animals (about the same as human walkspeed?)
- simple_animals, when talking, can only understand each other (and mobs with universal_speak)
Signed-off-by: Cael_Aislinn <cael_aislinn@yahoo.com.au>