Enhancement: Synchronize with ergebnis/php-library-template

.editorconfig

@@ -0,0 +1,17 @@
+root = true
+
+[*]
+charset = utf-8
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.json]
+indent_size = 2
+
+[*.{yaml,yml}]
+indent_size = 2
+
+[Makefile]
+indent_style = tab

.gitattributes

@@ -0,0 +1,8 @@
+/.github/               export-ignore
+/tests/                 export-ignore
+/.editorconfig          export-ignore
+/.gitattributes         export-ignore
+/.gitignore             export-ignore
+/.php_cs.dist           export-ignore
+/Makefile               export-ignore
+/phpunit.xml            export-ignore

.github/CODE_OF_CONDUCT.md

@@ -0,0 +1,46 @@
+# Contributor Covenant 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 am@localheinz.com. The project team will review and investigate all complaints, and will respond in a way that it deems 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/CONTRIBUTING.md

@@ -0,0 +1,62 @@
+# CONTRIBUTING
+
+We are using [GitHub Actions](https://github.com/features/actions) as a continuous integration system.
+
+For details, take a look at the following workflow configuration files:
+
+- [`workflows/integrate.yaml`](workflows/integrate.yaml)
+- [`workflows/prune.yaml`](workflows/prune.yaml)
+- [`workflows/release.yaml`](workflows/release.yaml)
+- [`workflows/triage.yaml`](workflows/triage.yaml)
+
+## Coding Standards
+
+We are using [`yamllint`](https://github.com/adrienverge/yamllint) to enforce coding standards in YAML files.
+
+If you do not have `yamllint` installed yet, run
+
+```sh
+$ brew install yamllint
+```
+
+to install `yamllint`.
+
+Run
+
+```sh
+$ make coding-standards
+```
+
+to detect coding standard violations.
+
+## Tests
+
+We are using [`phpunit/phpunit`](https://github.com/sebastianbergmann/phpunit) to drive the development.
+
+Run
+
+```sh
+$ make tests
+```
+
+to run all the tests.
+
+## Extra lazy?
+
+Run
+
+```sh
+$ make
+```
+
+to detect coding standard violations and run tests!
+
+## Help
+
+:bulb: Run
+
+```sh
+$ make help
+```
+
+to display a list of available targets with corresponding descriptions.

.github/FUNDING.yml

@@ -1 +1 @@
-patreon: s_bergmann
+patreon: "s_bergmann"

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,13 @@
+#### Steps required to reproduce the problem
+
+1. 
+2. 
+3. 
+
+#### Expected Result
+
+* 
+
+#### Actual Result
+
+* 

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+This PR
+
+* [x]
+* [ ]
+
+Follows #.
+Related to #.
+Fixes #.

.github/dependabot.yml

@@ -0,0 +1,15 @@
+# https://docs.github.com/en/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+
+updates:
+  - commit-message:
+      include: "scope"
+      prefix: "github-actions"
+    directory: "/"
+    labels:
+      - "dependency"
+    open-pull-requests-limit: 10
+    package-ecosystem: "github-actions"
+    schedule:
+      interval: "daily"

.github/settings.yml

@@ -1,7 +1,11 @@
 # https://github.com/probot/settings
 
 branches:
-  - name: master
+  - name: "master"
+
+    # https://docs.github.com/en/rest/reference/repos#delete-branch-protection
+    # https://docs.github.com/en/rest/reference/repos#update-branch-protection
+
     protection:
       enforce_admins: false
       required_pull_request_reviews:
@@ -10,28 +14,59 @@ branches:
         required_approving_review_count: 1
       required_status_checks:
         contexts:
-          - "Travis CI - Branch"
-          - "Travis CI - Pull Request"
+          - "Coding Standards"
+          - "Tests (7.1, highest)"
+          - "Tests (7.2, highest)"
+          - "Tests (7.3, highest)"
         strict: false
       restrictions: null
 
+# https://docs.github.com/en/rest/reference/issues#create-a-label
+# https://docs.github.com/en/rest/reference/issues#update-a-label
+
 labels:
-  - name: bug
-    color: ee0701
+  - name: "bug"
+    color: "ee0701"
+    description: ""
+
+  - name: "dependency"
+    color: "0366d6"
+    description: ""
+
+  - name: "enhancement"
+    color: "0e8a16"
+    description: ""
+
+  - name: "merge"
+    color: "6f42c1"
+    description: ""
+
+  - name: "question"
+    color: "cc317c"
+    description: ""
+
+  - name: "security"
+    color: "ee0701"
+    description: ""
+
+  - name: "stale"
+    color: "eeeeee"
+    description: ""
 
-  - name: enhancement
-    color: 0e8a16
+# https://docs.github.com/en/rest/reference/repos#update-a-repository
 
 repository:
   allow_merge_commit: true
   allow_rebase_merge: false
   allow_squash_merge: false
-  default_branch: master
+  archived: false
+  default_branch: "master"
+  delete_branch_on_merge: true
   description: ":fork_and_knife: Fork of sebastian/diff for use with ergebnis/composer-normalize."
   has_downloads: true
   has_issues: false
   has_pages: false
   has_projects: false
   has_wiki: false
-  name: diff
+  name: "diff"
   private: false

.github/workflows/integrate.yaml

@@ -0,0 +1,113 @@
+# https://docs.github.com/en/actions
+
+name: "Integrate"
+
+on: # yamllint disable-line rule:truthy
+  pull_request: null
+  push:
+    branches:
+      - "main"
+
+jobs:
+  coding-standards:
+    name: "Coding Standards"
+
+    runs-on: "ubuntu-latest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2.3.1"
+
+      - name: "Lint YAML files"
+        uses: "ibiqlik/action-yamllint@v1"
+        with:
+          config_file: ".yamllint.yaml"
+          file_or_dir: "."
+          strict: true
+
+  tests:
+    name: "Tests"
+
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      matrix:
+        php-version:
+          - "7.1"
+          - "7.2"
+          - "7.3"
+
+        dependencies:
+          - "highest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2.3.1"
+
+      - name: "Install PHP with extensions"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+
+      - name: "Determine composer cache directory"
+        id: "determine-composer-cache-directory"
+        run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
+
+      - name: "Cache dependencies installed with composer"
+        uses: "actions/cache@v2"
+        with:
+          path: "${{ steps.determine-composer-cache-directory.outputs.directory }}"
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
+
+      - name: "Install lowest dependencies from composer.json"
+        if: "matrix.dependencies == 'lowest'"
+        run: "composer update --no-interaction --no-progress --no-suggest --prefer-lowest"
+
+      - name: "Install locked dependencies from composer.lock"
+        if: "matrix.dependencies == 'locked'"
+        run: "composer install --no-interaction --no-progress --no-suggest"
+
+      - name: "Install highest dependencies from composer.json"
+        if: "matrix.dependencies == 'highest'"
+        run: "composer update --no-interaction --no-progress --no-suggest"
+
+      - name: "Run tests with phpunit/phpunit"
+        run: "vendor/bin/phpunit --configuration=phpunit.xml"
+
+  merge:
+    name: "Merge"
+
+    runs-on: "ubuntu-latest"
+
+    needs:
+      - "tests"
+
+    if: >
+      github.event_name == 'pull_request' &&
+      github.event.pull_request.draft == false && (
+        github.event.action == 'opened' ||
+        github.event.action == 'reopened' ||
+        github.event.action == 'synchronize'
+      ) && (
+        (github.actor == 'dependabot[bot]' && startsWith(github.event.pull_request.title, 'composer(deps-dev)')) ||
+        (github.actor == 'dependabot[bot]' && startsWith(github.event.pull_request.title, 'github-actions(deps)')) ||
+        (github.actor == 'localheinz' && contains(github.event.pull_request.labels.*.name, 'merge'))
+      )
+
+    steps:
+      - name: "Merge pull request"
+        uses: "actions/github-script@v2"
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+          script: |
+            const pullRequest = context.payload.pull_request
+            const repository = context.repo
+
+            await github.pulls.merge({
+              merge_method: "merge",
+              owner: repository.owner,
+              pull_number: pullRequest.number,
+              repo: repository.repo,
+            })