Release 2.16.0

Features

• source: add VectorTileSource. (cd43854)
• vector tiles: best support for vector tiles. (a882b50)

Code Refactoring

• rename .coords as .extent when it was an Extent (7893da9)
• example: add all layers in vector tiles examples. (b3b900b)

Bug Fixes

• example: avoid collision camera with the ground. (9a5580b)
• process: wrong pitch to color textures. (540f3dd)
• provider: wrong tag to cache data. (4b1adf2)
• test: apply vector tiles changes to tests (02c7555)