The underlying implementation of the 3D Tiles specification is now
handled by the `3d-tiles-renderer package`, which is much more feature
complete and performant than our current implementation. Notably,
this library already supports all the 3D Tiles format (including
instanced and composite tiles), as well as numerous features for the
3D Tiles Next version.

https://github.com/NASA-AMMOS/3DTilesRendererJS

BREAKING CHANGE: The `Tiles3D` entity's API has changed and the
`Tiles3DSource` class is removed. Please refer to the API documentation
for more information.

fix #191
fix #258
fix #298
fix #296
fix #147