Rebalance of the regrowth mechanic. I've separated the regrowth of old limbs into its own interaction separate from wound healing, and created a large delay before the regeneration takes place, and the regeneration can only occur once a month or so.

Because I changed the interaction, I'm not sure if it's fine to update or not mid-save. Probably not.

If you somehow fight a slime girl for a week straight without killing it, it will regenerate exactly once before not being able to do so again for a month.

- Changed slime core healing so that part regrowth is delayed by ~2.5 days (3000 ticks) from the start of a conflict. Previously destroyed parts would regrow instantly at extremely low health causing incoming attacks to constantly overkill newly-regrown parts and never be able to make it to the core. This will still happen if a fight lasts too long but it should be more reasonable now.

- Fixed an issue where slimes could unintentionally bleed to death. Combined with the previous fix of changing bodypart tokens slimes should now correctly only die if their core is destroyed.

- Fixed an issue where slimes would leak fluid from their entire body forever if they ever took damage. User report suggested slimes would cry blood for the rest of their existence once their eyes grew back after being destroyed.

- Fixed an issue with leather storage due to a missing token (thanks Atma01)

- Fixed a potential issue with slime body durability. They should be tougher now.

Fixed another potential graphical issue due to a mistyped layer ID. My apologies.

Fixed a graphical issue with purple slime queens.