TFCGenViewer 1.5.1

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Add Climate Restricted Features visualizer
- By default shows Kaolin Clay and Coral spawn locations
- Will display anything in the tfcgenvewier:visualizable_features placed feature tag
  - Can handle multiple, overlapping features gracefully
  - Uses the climate range set in the tfc:climate modifier of the feature
  - If the configured feature is a TFC ore-type, its biome tag will be respected
  - All entries also require a matching color definition in the /tfcgenviewer/features/ folder
Improve Rivers and Mountains and Rocks visualizer speeds, most noticeable with large visualization scales