For normal people

• Ported to MC 1.21.11.
• Fixed trial chambers spawning inside volcanoes in the islands world preset.
  • This was technically fixed in V5.1.1, but now the fix is available for all supported MC versions.
• Ocean monuments are now slightly rarer.
• Some structures have terrain adaptation in a larger area around them now.
• Increased default LOD quad count from 20M to 50M. The max is still 100M.
  • Does not retroactively apply to existing config files.
• Fixed endermen not spawning on the ender dragon's nest.
• Fixed name on voidmetal upgrade item.

For data pack developers

• Column value overriders can now pre-filter which structures they want to intercept.
• Column value overriders can now have access to structures that are further away from the current chunk.
• Nether and end root feature dispatchers are now a tag instead of a group.
• Added a "noop" feature dispatcher type, for anyone who wants an easy way to disable an existing feature dispatcher.