Document the release process

Releasing-Dancer2.md

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+# Releasing Dancer2
+
+This document is an overview of the process we go through when putting
+together a new release of Dancer2. This is a guide, not a bible - we
+don't follow this religiously - but it is better to do more of what's in
+here than less.
+
+## Ongoing
+
+For all PRs and branches merged:
+- Make sure all tests pass on the branch to be merged.
+- Make sure Changes is updated. Include the GitHub issue or PR # in the
+  changelog entry.
+- Make sure the author is reflected in the Contributors section of
+  Dancer2.pm
+- `git merge --no-ff <branch-name> && git push`
+
+## One week before release
+
+Notify the Core Team that a release is going out. Do this via the
+dancer-dev mailing list and Twist. If anyone has something to be merged,
+now is the time to bring it up. If the release needs to be delayed in
+order for someone to get a change into a release, this is the time to
+pump the brakes.
+
+## Day of Release
+
+### Pull the latest code from main
+
+Don't be That Person. Make sure everything you have is current.
+
+### Ensure all changes are merged
+
+Each release should have a milestone in GitHub. Make sure all issues and
+PRs in the milestone are closed. If an issue or PR needs to move to a
+later release, do that now.
+
+### Update the version in `dist.ini`
+
+We use [Semantic Versioning](https://semver.org/) for all Dancer2
+releases.
+
+### Do the release!
+
+Run `dzil release --all`. This will:
+
+- Run the test suite, including the author tests
+- Build a tarball for upload to PAUSE
+- Upload the new version to PAUSE
+- Commit `Dancer2.pm` and the new `README` file to the repo (after
+  which, you need to `git push`)
+
+After this, you must `git push` to push the updated release files to
+GitHub.
+
+The test suite *must* pass before a release can be done. This is your
+last chance to resolve any test failures.
+
+Provided the tests pass, you will be prompted to continue the release
+process. Provided you have your PAUSE credentials set up, this will
+upload the new dist to PAUSE. If you don't have a credential file set
+up, you can manually update the new release via the PAUSE web interface.
+
+### Send out release announcements
+
+Historically, release announcements have been sent out via the following
+channels:
+
+- dancer-users mailing list
+- Twitter/X
+- blogs.perl.org
+
+Going forward, we intend to also send out announcements via:
+
+- LinkedIn
+- Perl Community group on Facebook
+- dev.to
+- Medium
+
+Reshare from any accounts you have. Blog about it.
+
+## After the Release
+
+Watch for bug reports, praise, criticism, and respond appropriately.
+