The Graphviz layout programs take descriptions of graphs in a simple text
language, and make diagrams in several useful formats such as images and
SVG for web pages, Postscript for inclusion in PDF or other documents; or
display in an interactive graph browser.
This release restores the guile (for 2.0) and ocaml (for 4.04) bindings,
and adds bindings for python3 (for 3.6).