v0.3.19

Fixed

• Case sensitivity when dealing with file formats.
• Race condition when setting the transformation of gltf files.
• Case where internal tilesets were not disposed of properly when calling "dispose".
• Incorrect calculation of geometric error when spheres are available.
• Support for rayasting tiles with sphere bounding volumes.
• Add "constructLatLonFrame" and "getNorthernTangent" to Ellipsoid class.

Added

• getBounds and getOrientedBounds now return the AABB of a sphere if a tileset bounding box is not available.
• GoogleTilesRenderer for rendering Google's Photorealistic 3D Tiles