MLT format evolution

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MLT format evolution

MLT 1.0 is stable and recommended for production. Several extensions are being designed and prototyped that may land as a future MLT release.

Themes under exploration:

  • 3D support - 3D coordinates and elevation for 2.5D and 3D basemaps
  • Nested types - Lists, maps, and nested properties to support modern source formats such as Overture (GeoParquet)
  • Smaller metadata - Reduce per-tile header overhead and share encoding metadata across columns