
Sean Gillies <sgillies@frii.com>
Howard Butler <hobu@iastate.edu>

Spatial indexing is based on code by Marios Hadjieleftheriou, who has developed
spatial index library and published it under GNU LGPL. This code is based on
version 1.0 of the library: http://u-foria.org/marioh/spatialindex/index.html.

