Underneath

✅  Added Biomes: Defiled Caverns & Ancient Remnants [WIP] FromImage content
✅  Added new nuclearcraft ores to generation (see in-game tooltips)
✅  Removed bookwyrms from parasite target list
✅  Added bookwyrms to spawnpool of Underneath Defiled Lands with increased spawn weight (30 instead of 14)
✅  Added various new skyscrapers
✅  Added special structure with randomized "Escapist" loot such as a pickaxe, grapple hook, bandages, etc
✅  Changed portal blocks removing the ability to create portals on roof
✅  Adjusted underneath map generation featuring the first steps towards future expansion
✅  Added Mana candy to all underneath chests
✅  Added resource crates to chest-spawns in cities, new block that drops various new items when mined.
✅  add defiled mushrooms (for defiled powder) to defiled caverns