Document release process

.github_changelog_generator

@@ -0,0 +1,34 @@
+add-issues-wo-labels=true
+add-pr-wo-labels=true
+author=true
+breaking-labels=backwards-incompatible, Backwards incompatible, breaking
+breaking-prefix=### Breaking changes
+bug-labels=bug - confirmed
+bug-prefix=### Fixes
+compare-link=true
+date-format=%Y-%m-%d
+deprecated-labels=deprecated, Deprecated, Type: Deprecated
+deprecated-prefix=### Deprecates
+enhancement-labels=improvement, documentation, builds / deploys / releases, feature request
+enhancement-prefix=### Changes
+exclude-labels=bug - unconfirmed, can't reproduce / won't fix, invalid, triage
+filter-issues-by-milestone=true
+header=
+http-cache=true
+issues=true
+issue-prefix=### Closes
+merge-prefix=### Pull request(s) without label
+output=
+project=phpcodesniffer-composer-installer
+pulls=true
+removed-labels=removed, Removed, Type: Removed
+removed-prefix=### Removes
+security-labels=security, Security, Type: Security
+security-prefix=### Security
+summary-labels=Release summary, release-summary, Summary, summary
+unreleased=true
+unreleased-label=Unreleased
+unreleased-only=true
+user=Dealerdirect
+usernames-as-github-logins=true
+verbose=false

CONTRIBUTING.md

@@ -4,7 +4,7 @@ When contributing to this repository, please first discuss the change you wish
 to make via issue, email, or any other method with the owners of this repository
 before making a change.
 
-Please note we have a code of conduct, please follow it in all your interactions
+Please note we have [a code of conduct](#code-of-conduct), please follow it in all your interactions
 with the project.
 
 ## Issues and feature requests
@@ -25,5 +25,114 @@ Even better: You could submit a pull request with a fix / new feature!
    developers, or if you do not have permission to do that, you may request
    the second reviewer to merge it for you.
 
+## Release process
+
+To make it possible to automatically generate a changelog, all tickets/issues must have a milestone and at least one label.
+
+A changelog can be generated using the [`github-changelog-generator`][github-changelog-generator].[<sup>(1)</sup>](#footnotes)
+
+Our release versions follow [Semantic Versioning][semver].
+
+New releases (and any related tags) are always created from the `master` branch.
+
+To create a new release:
+
+1. Make sure all closed tickets and MRs have a label.
+
+2. Make sure all closed tickets and MRs are added to the milestone that is to be released.
+
+3. Move any open tickets to the next milestone (create a new one if needed).
+
+4. Generate a changelog by running `github_changelog_generator` in the project root:[<sup>(2)</sup>](#footnotes)
+   ```
+   github_changelog_generator --future-release "${sVersion}" --header --output --unreleased-only 2>/dev/null
+   ```
+   Where `sVersion` contains the new version to release.
+
+5. Use GitHub "Draft a new release" functionality to draft a new release (this also creates a tag).
+
+6. Close the milestone for the version that was just released.
+
+## Code of conduct
+
+### Our pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, gender identity and expression, level of experience,
+nationality, personal appearance, race, religion, or sexual identity and
+orientation.
+
+### Our standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+- Using welcoming and inclusive language
+- Being respectful of differing viewpoints and experiences
+- Gracefully accepting constructive criticism
+- Focusing on what is best for the community
+- Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+- The use of sexualized language or imagery and unwelcome sexual attention or advances
+- Trolling, insulting/derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or electronic address, without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting
+
+### Our responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+### Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+### Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at franck.nijhof@dealerdirect.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+### Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/
 [github]: https://github.com/dealerdirect/phpcodesniffer-composer-installer/issues
 [prs]: https://github.com/dealerdirect/phpcodesniffer-composer-installer/pulls
+
+## Footnotes
+
+1. All settings needed for the changelog-generator are set in `.github_changelog_generator` file.
+
+2. A convenience script is present at `bin/generate-changelog.sh` that will install the changelog-generator, if it is not present, and run the appropriate `github_changelog_generator` command.
+   The script requires BASH to run. It should be run from the project root, similar to `github_changelog_generator`.
+
+[github-changelog-generator]: https://github.com/github-changelog-generator/github-changelog-generator/
+[semver]: https://semver.org/

bin/generate-changelog.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+
+set -o errexit -o errtrace -o nounset -o pipefail
+
+: ${GITHUB_CHANGELOG_GENERATOR:=github_changelog_generator}
+: ${GEM:=gem}
+
+generate_changelog() {
+    local -r sVersion="${1?One parameter required: <release-to-generate>}"
+
+    if ! command -v "${GITHUB_CHANGELOG_GENERATOR}" >/dev/null 2>&1;then
+        echo "This script requires the '${GITHUB_CHANGELOG_GENERATOR}' Ruby Gem"
+
+        if ! command -v "${GEM}" >/dev/null 2>&1;then
+            echo "Could not find the '${GEM}' command needed to install 'github_changelog_generator'!" >&2
+            echo 'Aborting.'
+            exit 67
+        else
+            echo "Installing '${GITHUB_CHANGELOG_GENERATOR}'..."
+            gem install github_changelog_generator
+        fi
+    fi
+
+    local -r sChangelog="$(
+        "${GITHUB_CHANGELOG_GENERATOR}"                 \
+            --user Dealerdirect                         \
+            --project phpcodesniffer-composer-installer \
+            --token "$(cat ~/.github-token)"            \
+            --future-release "${sVersion}"              \
+            --enhancement-label '### Changes'           \
+            --bugs-label '### Fixes'                    \
+            --issues-label '### Closes'                 \
+            --usernames-as-github-logins                \
+            --bug-labels 'bug - confirmed'              \
+            --enhancement-labels  'improvement','documentation','builds / deploys / releases','feature request' \
+            --exclude-labels 'bug - unconfirmed',"can't reproduce / won't fix",'invalid','triage' \
+            --unreleased-only                           \
+            --output '' 2>/dev/null
+    )" || echo "There was a problem running '${GITHUB_CHANGELOG_GENERATOR}'"
+
+    echo "${sChangelog}" | sed -E 's/\[\\(#[0-9]+)\]\([^)]+\)/\1/' | head -n -3
+}
+
+if [[ "${BASH_SOURCE[0]}" != "$0" ]]; then
+    export -f generate_changelog
+else
+    generate_changelog "${@}"
+    exit $?
+fi