Bump antsibull-changelog, and output MarkDown version next to RST version of changelog.

MANIFEST.in

@@ -1,5 +1,6 @@
 include COPYING
 include bin/*
+include changelogs/CHANGELOG*.md
 include changelogs/CHANGELOG*.rst
 include changelogs/changelog.yaml
 include licenses/*.txt

changelogs/README.md

@@ -1,8 +1,8 @@
 Changelogs
 ==========
 
-As part of the release process a version-specific `CHANGELOG-vX.Y.rst` will be generated from fragments in
-the `fragments` directory.
+As part of the release process a version-specific `CHANGELOG-vX.Y.rst` and `CHANGELOG-vX.Y.md` will be generated from
+fragments in the `fragments` directory.
 
 On release branches once a release has been created, consult the branch's version-specific file for changes that have
 occurred in that branch. The `devel` branch does not have a generated changelog, only changelog fragments.

changelogs/config.yaml

@@ -11,6 +11,9 @@ mention_ancestor: false
 notesdir: fragments
 prelude_section_name: release_summary
 new_plugins_after_name: removed_features
+output_formats:
+- md
+- rst
 sections:
 - ['major_changes', 'Major Changes']
 - ['minor_changes', 'Minor Changes']

packaging/release.py

@@ -973,7 +973,7 @@ def create_github_release_notes(upstream: Remote, repository: str, version: Vers
     variables = dict(
         version=version,
         releases=get_release_artifact_details(repository, version, validate),
-        changelog=f"https://github.com/{upstream.user}/{upstream.repo}/blob/v{version}/changelogs/CHANGELOG-v{version.major}.{version.minor}.rst",
+        changelog=f"https://github.com/{upstream.user}/{upstream.repo}/blob/v{version}/changelogs/CHANGELOG-v{version.major}.{version.minor}.md",
     )
 
     release_notes = template.render(**variables).strip()
@@ -1094,7 +1094,7 @@ This release is a maintenance release containing numerous bugfixes.
 {% endif %}
 The full changelog can be found here:
 
-https://github.com/{{ upstream.user }}/{{ upstream.repo }}/blob/v{{ version }}/changelogs/CHANGELOG-v{{ info.short }}.rst
+https://github.com/{{ upstream.user }}/{{ upstream.repo }}/blob/v{{ version }}/changelogs/CHANGELOG-v{{ info.short }}.md
 
 
 Schedule for future releases

test/sanity/code-smell/package-data.py

@@ -161,9 +161,13 @@ def main() -> None:
             # Make sure a changelog exists for this version when testing from devel.
             # When testing from a stable branch the changelog will already exist.
             major_minor_version = '.'.join(__version__.split('.')[:2])
-            changelog_path = f'changelogs/CHANGELOG-v{major_minor_version}.rst'
-            pathlib.Path(clean_repo_dir, changelog_path).touch()
-            complete_file_list.append(changelog_path)
+            changelog_paths = [
+                f'changelogs/CHANGELOG-v{major_minor_version}.rst',
+                f'changelogs/CHANGELOG-v{major_minor_version}.md',
+            ]
+            for changelog_path in changelog_paths:
+                pathlib.Path(clean_repo_dir, changelog_path).touch()
+                complete_file_list.append(changelog_path)
 
         expected_sdist_files = collect_sdist_files(complete_file_list)
         expected_wheel_files = collect_wheel_files(complete_file_list)