Removed sea life from showing up in herd migration events.

Fish Meat now takes only 2 days to rot
Creatures that transform into other creatures as they age should now keep their zone restrictions.

[Auto-generated text]: Update on 11/3/2023 1:11:36 PM.

[Auto-generated text]: Update on 9/8/2023 7:19:37 PM.

Prep for the new version of Biomes! Caverns :D

[Auto-generated text]: Update on 6/17/2023 12:11:33 PM.

Fixes:
Blood drinker pawns will no longer try to drink the blood of non-organic pawns (mechanoids)
Caverns events no occur in all Caverns biomes
Snails can now be properly slaughtered

Filth eaters now reserve the filth they want to eat (preventing doom stacks of animals trying to all eat the same filth)
When playing in caverns biomes, certain events have been disabled (heat wave, cold snap, etc)
Lava should no longer be visually weird when polluted

Additions:
Added gastropod meat
Added Larva-like body
Added tough leather

Changes:
Grey chitin has been slightly improved
Chitin insulation levels have been tweaked
Moved bodypart stuff from Prehistoric
Filth eaters will now eat ALL filth
Filth eaters will now only leave their allowed area to eat when desperate
Plants requiring extreme temps can now be sown in said extreme temps

Fixes:
Lava gen issue fixed
Transport shuttle permit now works in Caverns biomes
VTE contracts can now be fulfilled in caverns

Tons of new features in preparation for Biomes! Caverns. They can be found in detail on our github wiki! https://github.com/biomes-team/BiomesCore/wiki