This code is released under the libpng license.
-libpng versions 1.2.6, August 15, 2004, through 1.4.3, June 26, 2010, are
-Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.5.2, March 31, 2011, are
+Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
-June 26, 2010
+March 31, 2011