Replace some DOC_TBA comments with real doc
Replace more DOC_TBA comments
Improve CompositePrimitive doc
Rename CompositePrimitive to PrimitiveCollection
Added options to PrimitiveCollection constructor
Replace more DOC_TBA comments
Move various files to their new homes.
Move a bunch of terrain-related types to Core.
Sort requires.
Remove Scene dependency in TilingScheme.js.
Factor Renderer/Scene stuff out of TerrainProvider.
Update CHANGES.md.
Fix test failures.
Fix require order.
Fix many documentation errors.
Remove redundant link text.
Use viewer in examples instead of cesium widget
Remove inspector from index.html; it is in Sandcastle
More fixes.
Use getters in Core