Asger Nyman Christiansen

Results 25 issues of Asger Nyman Christiansen

Also make sure to only deserialize textures and materials once for one `Model`.

Use the [stl_io](https://github.com/hmeyer/stl_io) crate to serialize a 3D model to a file.

Revert the removal in https://github.com/asny/three-d/commit/85612fd4187ef7f9a2f6fdf66f266c96a8447a88 and fix the example on web