* Porting species equip_adjust from Neb.
* get_species() => get_species_name(), adds correct get_species() impl
* sprite_sheets is now crudely lazylisted.
* Adds returns to add_blood and add_accessories.
* apply_addblends now uses an overlay.
* Renames the various worn overlay procs to be more informative.
* Debugging/refining overlay gen.
* Adding handling for string icon paths.
* Refining/debugging offset overlay gen.
* Getting the offset system working.
* Commenting out Teshari offsets for the time being.
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