upgraded png version line 167 448#1

Open

kemin711 wants to merge 10 commits intofedser:masterfrom

kemin711:master

Commits on Oct 19, 2016

upgraded png version line 167 448
Kemin Zhou
committed

Commits on Dec 4, 2016

update the autotools system
kemin711
committed

Commits on Dec 7, 2016

now workds on modern linux ubuntu
kemin711
committed

Commits on Jan 6, 2017

png 1.6 bug fix
kemin711
committed

Commits on May 3, 2022

update documentation
kemin711
committed

Commits on Jun 5, 2022

Commits on Jan 17, 2024