I am glad to see that they recently (relative to project age) got two new developers which have for the last two years actively worked on rejuvenating the proje

I am glad to see that they recently (relative to project age) got two new developers which have for the last two years actively worked on rejuvenating the project, tackling some long standing issues, and actually making new releases with bugfixes. That message was added to README before that. Of course it doesn't mean people should stop supporting the project, but I am currently less worried about future of graphviz than the last time I looked into the state of it.