zlib/libpng License - http://www.opensource.org/licenses/zlib-license.php

This software is copyright (c) 2006 Peter Provost <peter@provost.org>

This software is provided 'as-is', without any express or implied warranty. In 
no event will the authors be held liable for any damages arising from the use 
of this software.

Permission is granted to anyone to use this software for any purpose, including 
commercial applications, and to alter it and redistribute it freely, subject to 
the following restrictions:

    1. The origin of this software must not be misrepresented; you must not 
	   claim that you wrote the original software. If you use this software in 
	   a product, an acknowledgment in the product documentation would be 
	   appreciated but is not required.

    2. Altered source versions must be plainly marked as such, and must not be 
	   misrepresented as being the original software.

    3. This notice may not be removed or altered from any source distribution.
