1version 1.2.11, January 15th, 2017 2 3Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler 4 5This software is provided 'as-is', without any express or implied 6warranty. In no event will the authors be held liable for any damages 7arising from the use of this software. 8 9Permission is granted to anyone to use this software for any purpose, 10including commercial applications, and to alter it and redistribute it 11freely, subject to the following restrictions: 12 131. The origin of this software must not be misrepresented; you must not 14 claim that you wrote the original software. If you use this software 15 in a product, an acknowledgment in the product documentation would be 16 appreciated but is not required. 172. Altered source versions must be plainly marked as such, and must not be 18 misrepresented as being the original software. 193. This notice may not be removed or altered from any source distribution. 20