The model in knight.blend and texture in knight.png:
  from http://opengameart.org/content/animated-knight
  by Clement Wu, Nikolaus & Botanic,
  licensed on
    CC-BY 3.0
    CC-BY-SA 3.0
    GPL 3.0
    GPL 2.0
  or above versions of these.

  It was somewhat retouched by Michalis Kamburelis.
  It's the same model we use in examples/resource_animations/,
  here exported to castle-anim-frames animations.
