This code is licensed either under the terms of the MIT license or
the Apache-2.0 license. The text for the Apache-2.0 license can be
found at https://opensource.org/licenses/Apache-2.0, and the text of
the MIT license can be found at https://opensource.org/licenses/MIT.
This project heavily relies on the `nvtt` library, published by Ignacio
Castaño under the terms of the MIT license. The text for this license
can be found at https://github.com/castano/nvidia-texture-tools/blob/master/LICENSE
The test data in this repository is licensed under various Creative Commons licenses:
* 'June_odd-eyed-cat.jpg': https://en.wikipedia.org/wiki/File:June_odd-eyed-cat.jpg
* 'Chick.jpg': https://commons.wikimedia.org/wiki/File:Barn_Swallow_(Hirundo_rustica)_chick.jpg