Modern Beta for Forge 1.12.2

• Improve quality of map preview renders.
  • Improve accuracy of Indev/Classic map preview.
  • Improve accuracy of snow/ice placement.
  • Improve accuracy of beach placement.
  • Add rendering of gravel beaches and stone basins.
  • Add diplay of current generation phase when generating Indev/Classic map preview.
  • Replace 'Use Biome Colors' option with 'Use Biome Blend' to toggle blended biome borders.
• Add functionality to copy the teleport command to clipboard when selecting a region of a rendered map preview.
• Improve accuracy of Beta/PE spawn algorithms.

Technical Changes

• Significant rewrite of SurfaceBuilder API, all of the noise-related code has been moved into a new NoiseSurfaceBuilder class and all related methods/members of the former have been deprecated.
• Move the Property visitor package to match the Property API package structure.