~ Shifted biome cold status to Lethal Cold
+ Added a Nitrogen Deep Sea layer between the surface and the floor - adds additional ocean
~ Tweaked the cockpit descriptor a bit
+ Added a custom parallax for the Sea layer
- Removed Coral Cave spawn chance from subsurface layer
~ Shifted layer offsets from 1500 to 1000

- Removed Apex Underwater Lab from dungeon spawn pool - had a tendency to spawn *well* above the ocean level
+ Re-added planet spawns to Dying and Black stars (cool and frozen variants)

~ Reworked pool spawns slightly
~ Retweaked the horizon masks
~ Upped threat scale from 4-5 to 5-6
+ Added Ice Fire, Snow, and Precursor (Surface) to surface layer
+ Added Coral Cave to underground layers 1-3
+ Added Ice Cave to underground 2-3
~ Increased ocean level offset by 500 (to 1500).

~ Reweight spawn pools
- Birds no longer spawn
~ Changed colors to ice (was too blue)
~ Spawns are now immune to ice slip
+ Added weather types snowy frozen and snowy frozen severe
~ Changed ore spawn distribution to the same as Ice Waste worlds
~ Removed direct spawns around Dying and Blue stars - now just Tier 5 and 6 systems in general
+ Added FU liquid collector stat
- Removed Hylotl city spawn
+ Added Apex dungeon and 2 FU spawns
+ Added elder and gleaming asteroid types
+ Added ice cloud atmosphere

+ Added atmospheric condenser drops
+ Added asteroids/space layer
~ Changed underground (layer 2 and 3) to represent ice waste-like planets
~ Changed underground (layer 2 and 3) to have the possibility of spawning Precursor Biomes

~ Upped the default environment hazard to cold level 3 (same as an Ice Waste biome)
~ Added weathers frozen wind and severe frozen wind
~ Updated the description accordingly