Wilds Regrown Api

Patches:

• Updated error handling if the level list is empty, potentially this catches bad mod/launcher conflicts more easily.
• Smaller fixes:
• River aquifer spawn width is slightly increased to remove air blocks near rough banks.
• Fixed aquifer height, (potentially) no more bumps on waterfalls.
• Lowered river velocity clamp, aka they flow faster/earlier instead of being stagnant.
• Changed how rivers and lakes interpret continent scaling.
• Increased samples on waterfall banks to make them a bit smoother.
• Fixed surface litter structure feature spawning blocks one position too low.
• Improved biome terrain modifier blending
• Temporarily disabled snow feature due to it glitching squares?
• Updated welcome message to provide more helpful tips.
• Updated /wrg command stack, should be cleaner and easier to use.
• Updated Vanilla+ generator config
• Disabled thermal erosion
• Set world age too "young" (disables flow erosion in building stage)
• This should fix squaring glitches on the surface, due too bad config.