* Copyright 2015 Raoul van Rueschen
 * 
 * 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:
 * 
 * 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.
 * Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
 * This notice may not be removed or altered from any source distribution.