1 README for libpng version 1.6.20 - December 3, 2015 (shared library 16.0)
   2 See the note about version numbers near the top of png.h
   3 
   4 See INSTALL for instructions on how to install libpng.
   5 
   6 Libpng comes in several distribution formats.  Get libpng-*.tar.gz or
   7 libpng-*.tar.xz or if you want UNIX-style line endings in the text files,
   8 or lpng*.7z or lpng*.zip if you want DOS-style line endings.
   9 
  10 Version 0.89 was the first official release of libpng.  Don't let the
  11 fact that it's the first release fool you.  The libpng library has been in
  12 extensive use and testing since mid-1995.  By late 1997 it had
  13 finally gotten to the stage where there hadn't been significant
  14 changes to the API in some time, and people have a bad feeling about
  15 libraries with versions < 1.0.  Version 1.0.0 was released in
  16 March 1998.
  17 
  18 ****
  19 Note that some of the changes to the png_info structure render this
  20 version of the library binary incompatible with libpng-0.89 or
  21 earlier versions if you are using a shared library.  The type of the

   1 README for libpng version 1.6.23 - June 9, 2016 (shared library 16.0)
   2 See the note about version numbers near the top of png.h
   3 
   4 See INSTALL for instructions on how to install libpng.
   5 
   6 Libpng comes in several distribution formats.  Get libpng-*.tar.gz or
   7 libpng-*.tar.xz or if you want UNIX-style line endings in the text files,
   8 or lpng*.7z or lpng*.zip if you want DOS-style line endings.
   9 
  10 Version 0.89 was the first official release of libpng.  Don't let the
  11 fact that it's the first release fool you.  The libpng library has been in
  12 extensive use and testing since mid-1995.  By late 1997 it had
  13 finally gotten to the stage where there hadn't been significant
  14 changes to the API in some time, and people have a bad feeling about
  15 libraries with versions < 1.0.  Version 1.0.0 was released in
  16 March 1998.
  17 
  18 ****
  19 Note that some of the changes to the png_info structure render this
  20 version of the library binary incompatible with libpng-0.89 or
  21 earlier versions if you are using a shared library.  The type of the