start 6.0.0 development

This starts 6.0.0 rather than 5.0.2 because we know we are immediately about to
merge something breaking (`$GV_FILE_PATH` removal).

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8125db6826fc64a832f69d8a4672b199fb0aa0f..6c38e5412643c68614ba5769b4334736a317d414 100644 (file)
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased (6.0.0)]
+
 ## [5.0.1] – 2022-08-20
 
 ### Fixed
@@ -1785,6 +1787,7 @@ March 13, 2000: Use AM_PROG_LIBTOOL instead of AC_PROG_LIBTOOL
    in configure.in.  John Ellson <ellson@graphviz.org>
 ```
 
+[Unreleased]: https://gitlab.com/graphviz/graphviz/compare/5.0.1...main
 [5.0.1]: https://gitlab.com/graphviz/graphviz/compare/5.0.0...5.0.1
 [5.0.0]: https://gitlab.com/graphviz/graphviz/compare/4.0.0...5.0.0
 [4.0.0]: https://gitlab.com/graphviz/graphviz/compare/3.0.0...4.0.0