The SparrowRenderer has mostly been written by Anselme FRANÇOIS.

Thanks to LodePNG for texture serialization : http://lodev.org/lodepng

Thanks to tinydir for directory navigation : https://github.com/cxong/tinydir

Thanks to GL3W for OpenGL 3.3 core function loading : https://github.com/skaslev/gl3w

Thanks to Dimitri RAGUET for his little fixes, explanations, and optimisations.