Copyright (c) 2008, 2015, Autch.

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.