COPYRIGHT NOTICE, DISCLAIMER, and LICENSE&#xA;=========================================&#xA;&#xA;PNG Reference Library License version 2&#xA;---------------------------------------&#xA;&#xA; * Copyright (c) 1995-2019 The PNG Reference Library Authors.&#xA; * Copyright (c) 2018-2019 Cosmin Truta.&#xA; * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.&#xA; * Copyright (c) 1996-1997 Andreas Dilger.&#xA; * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.&#xA;&#xA;The software is supplied &#34;as is&#34;, without warranty of any kind,&#xA;express or implied, including, without limitation, the warranties&#xA;of merchantability, fitness for a particular purpose, title, and&#xA;non-infringement.  In no event shall the Copyright owners, or&#xA;anyone distributing the software, be liable for any damages or&#xA;other liability, whether in contract, tort or otherwise, arising&#xA;from, out of, or in connection with the software, or the use or&#xA;other dealings in the software, even if advised of the possibility&#xA;of such damage.&#xA;&#xA;Permission is hereby granted to use, copy, modify, and distribute&#xA;this software, or portions hereof, for any purpose, without fee,&#xA;subject to the following restrictions:&#xA;&#xA; 1. The origin of this software must not be misrepresented; you&#xA;    must not claim that you wrote the original software.  If you&#xA;    use this software in a product, an acknowledgment in the product&#xA;    documentation would be appreciated, but is not required.&#xA;&#xA; 2. Altered source versions must be plainly marked as such, and must&#xA;    not be misrepresented as being the original software.&#xA;&#xA; 3. This Copyright notice may not be removed or altered from any&#xA;    source or altered source distribution.&#xA;&#xA;&#xA;PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35)&#xA;-----------------------------------------------------------------------&#xA;&#xA;libpng versions 1.0.7, July 1, 2000, through 1.6.35, July 15, 2018 are&#xA;Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, are&#xA;derived from libpng-1.0.6, and are distributed according to the same&#xA;disclaimer and license as libpng-1.0.6 with the following individuals&#xA;added to the list of Contributing Authors:&#xA;&#xA;    Simon-Pierre Cadieux&#xA;    Eric S. Raymond&#xA;    Mans Rullgard&#xA;    Cosmin Truta&#xA;    Gilles Vollant&#xA;    James Yu&#xA;    Mandar Sahastrabuddhe&#xA;    Google Inc.&#xA;    Vadim Barkov&#xA;&#xA;and with the following additions to the disclaimer:&#xA;&#xA;    There is no warranty against interference with your enjoyment of&#xA;    the library or against infringement.  There is no warranty that our&#xA;    efforts or the library will fulfill any of your particular purposes&#xA;    or needs.  This library is provided with all faults, and the entire&#xA;    risk of satisfactory quality, performance, accuracy, and effort is&#xA;    with the user.&#xA;&#xA;Some files in the &#34;contrib&#34; directory and some configure-generated&#xA;files that are distributed with libpng have other copyright owners, and&#xA;are released under other open source licenses.&#xA;&#xA;libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are&#xA;Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from&#xA;libpng-0.96, and are distributed according to the same disclaimer and&#xA;license as libpng-0.96, with the following individuals added to the&#xA;list of Contributing Authors:&#xA;&#xA;    Tom Lane&#xA;    Glenn Randers-Pehrson&#xA;    Willem van Schaik&#xA;&#xA;libpng versions 0.89, June 1996, through 0.96, May 1997, are&#xA;Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,&#xA;and are distributed according to the same disclaimer and license as&#xA;libpng-0.88, with the following individuals added to the list of&#xA;Contributing Authors:&#xA;&#xA;    John Bowler&#xA;    Kevin Bracey&#xA;    Sam Bushell&#xA;    Magnus Holmgren&#xA;    Greg Roelofs&#xA;    Tom Tanner&#xA;&#xA;Some files in the &#34;scripts&#34; directory have other copyright owners,&#xA;but are released under this license.&#xA;&#xA;libpng versions 0.5, May 1995, through 0.88, January 1996, are&#xA;Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.&#xA;&#xA;For the purposes of this copyright and license, &#34;Contributing Authors&#34;&#xA;is defined as the following set of individuals:&#xA;&#xA;    Andreas Dilger&#xA;    Dave Martindale&#xA;    Guy Eric Schalnat&#xA;    Paul Schmidt&#xA;    Tim Wegner&#xA;&#xA;The PNG Reference Library is supplied &#34;AS IS&#34;.  The Contributing&#xA;Authors and Group 42, Inc. disclaim all warranties, expressed or&#xA;implied, including, without limitation, the warranties of&#xA;merchantability and of fitness for any purpose.  The Contributing&#xA;Authors and Group 42, Inc. assume no liability for direct, indirect,&#xA;incidental, special, exemplary, or consequential damages, which may&#xA;result from the use of the PNG Reference Library, even if advised of&#xA;the possibility of such damage.&#xA;&#xA;Permission is hereby granted to use, copy, modify, and distribute this&#xA;source code, or portions hereof, for any purpose, without fee, subject&#xA;to the following restrictions:&#xA;&#xA; 1. The origin of this source code must not be misrepresented.&#xA;&#xA; 2. Altered versions must be plainly marked as such and must not&#xA;    be misrepresented as being the original source.&#xA;&#xA; 3. This Copyright notice may not be removed or altered from any&#xA;    source or altered source distribution.&#xA;&#xA;The Contributing Authors and Group 42, Inc. specifically permit,&#xA;without fee, and encourage the use of this source code as a component&#xA;to supporting the PNG file format in commercial products.  If you use&#xA;this source code in a product, acknowledgment is not required but would&#xA;be appreciated.&#xA;