Original authors:

* Diederik van der Boor (@vdboor)

Contributors:

* NotSqrt (@NotSqrt)
* Michael P. Jung (@bikeshedder)
* Ryan Senkbeil (@rsenk330)
* Ezra Buehler (@easybe)
* Iacopo Spalletti (@yakky)
* Jacob Rief (@jrief)
* Basil Shubin (@bashu)

Inspired by:

* django-hvad, copyright (c) Jonas Obrist, Kristian Øllegaard and others (BSD licensed)

