Pngnq is an adaptation by Stuart Coyle of Greg Roelf's pnqquant using
Anthony Dekker's neuquant algorithm.
The neuquant algorithm uses a neural network to optimise the color map
selection. This is fast and quite accurate, giving good results on many
types of images.
WWW: http://pngnq.sourceforge.net/
PR: ports/134420
Submitted by: stb at lassitu.de
