Terralith

- Updated the pack to support Minecraft 1.18.2.
- Added three new structures: Fortified Villages, Fortified Desert Villages and the Spire.
- Added vanilla structures back to Terralith biomes.
- Added the Traveler's Map. This special map points to a biome! It can be any of them - rare or common. It's only found in Terralith structures, so you'll need to explore to find it.
- Added Megacaves. These are extremely rare and extremely large - much bigger than even the most dramatic caverns of vanilla Minecraft.
- Volcanoes and Calderas now have proper craters, full of lava and water respectively.
- Large deserts now have dramatic dunes. These are very distinct from any other biome's terrain - they are smooth hills with sharp peaks.
- Badlands now have arches.
- Alpha Islands and Alpha Islands (Winter) have been made more common. They are still the rarest biomes though.
- A few biomes have been shuffled around (mostly gravel desert & shrubland biomes.)
- Cheese caves and Megacaves are more likely to be partially flooded.
- Added 2 new technical biomes (Desert Canyon and Wintry Lowlands). These biomes are identical to Desert and Wintry Forest respectively, and only exist to prevent structures spawning in undesirable locations.
- Coastal terrain in some regions is now much flatter than before.
- Optimized generation code significantly.