OptiPNG 0.7.7 released

Dear OptiPNG users,

OptiPNG version 0.7.7, a maintenance update that contains critical and non-critical fixes, has been released. We strongly recommend upgrading.

See the HISTORY document for more information.
http://optipng.sourceforge.net/
https://sourceforge.net/projects/optipng/files/OptiPNG/optipng-0.7.7/