diff --git a/.dependabot/config.yml b/.dependabot/config.yaml
similarity index 100%
rename from .dependabot/config.yml
rename to .dependabot/config.yaml
diff --git a/.editorconfig b/.editorconfig
index 329611ca..82ef559b 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -13,7 +13,7 @@ indent_size = 2
 [*.neon]
 indent_style = tab
 
-[*.yml]
+[*.yaml]
 indent_size = 2
 
 [Makefile]
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 530fc99d..d2ee1fd1 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -2,7 +2,13 @@
 
 We are using [GitHub Actions](https://github.com/features/actions) as a continuous integration system.
 
-For details, see [`workflows/continuous-integration.yml`](workflows/continuous-integration.yml).
+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/renew.yaml`](workflows/renew.yaml)
+- [`workflows/update.yaml`](workflows/update.yaml)
 
 ## Coding Standards
 
diff --git a/.github/settings.yml b/.github/settings.yml
index 144e0631..cf6ed877 100644
--- a/.github/settings.yml
+++ b/.github/settings.yml
@@ -35,6 +35,12 @@ branches:
           - "codecov/project"
         strict: false
       restrictions:
+
+        # https://developer.github.com/v3/repos/branches/#parameters-1
+
+        # Note: User, app, and team restrictions are only available for organization-owned repositories.
+        # Set to null to disable when using this configuration for a repository on a personal account.
+
         apps:
           - "dependabot-preview"
         teams: []
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/integrate.yaml
similarity index 84%
rename from .github/workflows/continuous-integration.yml
rename to .github/workflows/integrate.yaml
index 5388dbdb..2e86769b 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/integrate.yaml
@@ -1,9 +1,9 @@
 # https://help.github.com/en/categories/automating-your-workflow-with-github-actions
 
-name: "Continuous Integration"
+name: "Integrate"
 
-on:
-  pull_request:
+on: # yamllint disable-line rule:truthy
+  pull_request: null
   push:
     branches:
       - "master"
@@ -28,10 +28,17 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v2.0.0"
+        uses: "actions/checkout@v2"
+
+      - name: "Lint YAML files"
+        uses: "ibiqlik/action-yamllint@v1"
+        with:
+          config_file: ".yamllint.yaml"
+          file_or_dir: "."
+          strict: true
 
       - name: "Install PHP with extensions"
-        uses: "shivammathur/setup-php@2.0.2"
+        uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
           extensions: "${{ env.REQUIRED_PHP_EXTENSIONS }}"
@@ -45,21 +52,21 @@ jobs:
         run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         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 with composer"
+      - 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 with composer"
+      - name: "Install locked dependencies from composer.lock"
         if: "matrix.dependencies == 'locked'"
         run: "composer install --no-interaction --no-progress --no-suggest"
 
-      - name: "Install highest dependencies with composer"
+      - name: "Install highest dependencies from composer.json"
         if: "matrix.dependencies == 'highest'"
         run: "composer update --no-interaction --no-progress --no-suggest"
 
@@ -72,7 +79,7 @@ jobs:
         run: "mkdir -p .build/php-cs-fixer"
 
       - name: "Cache cache directory for friendsofphp/php-cs-fixer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         with:
           path: ".build/php-cs-fixer"
           key: "php-${{ matrix.php-version }}-php-cs-fixer-${{ hashFiles('**/composer.lock') }}"
@@ -96,10 +103,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v2.0.0"
+        uses: "actions/checkout@v2"
 
       - name: "Install PHP with extensions"
-        uses: "shivammathur/setup-php@2.0.2"
+        uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
           extensions: "${{ env.REQUIRED_PHP_EXTENSIONS }}"
@@ -110,21 +117,21 @@ jobs:
         run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         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 with composer"
+      - 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 with composer"
+      - name: "Install locked dependencies from composer.lock"
         if: "matrix.dependencies == 'locked'"
         run: "composer install --no-interaction --no-progress --no-suggest"
 
-      - name: "Install highest dependencies with composer"
+      - name: "Install highest dependencies from composer.json"
         if: "matrix.dependencies == 'highest'"
         run: "composer update --no-interaction --no-progress --no-suggest"
 
@@ -148,10 +155,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v2.0.0"
+        uses: "actions/checkout@v2"
 
       - name: "Install PHP with extensions"
-        uses: "shivammathur/setup-php@2.0.2"
+        uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
           extensions: "${{ env.REQUIRED_PHP_EXTENSIONS }}"
@@ -162,21 +169,21 @@ jobs:
         run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         with:
           path: "${{ steps.determine-composer-cache-directory.outputs.directory }}"
           key: "${{ matrix.php-version }}-composer-locked-${{ hashFiles('**/composer.lock') }}"
           restore-keys: "${{ matrix.php-version }}-composer-locked-"
 
-      - name: "Install lowest dependencies with composer"
+      - 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 with composer"
+      - name: "Install locked dependencies from composer.lock"
         if: "matrix.dependencies == 'locked'"
         run: "composer install --no-interaction --no-progress --no-suggest"
 
-      - name: "Install highest dependencies with composer"
+      - name: "Install highest dependencies from composer.json"
         if: "matrix.dependencies == 'highest'"
         run: "composer update --no-interaction --no-progress --no-suggest"
 
@@ -212,10 +219,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v2.0.0"
+        uses: "actions/checkout@v2"
 
       - name: "Install PHP with extensions"
-        uses: "shivammathur/setup-php@2.0.2"
+        uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
           extensions: "${{ env.REQUIRED_PHP_EXTENSIONS }}"
@@ -226,21 +233,21 @@ jobs:
         run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         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 with composer"
+      - 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 with composer"
+      - name: "Install locked dependencies from composer.lock"
         if: "matrix.dependencies == 'locked'"
         run: "composer install --no-interaction --no-progress --no-suggest"
 
-      - name: "Install highest dependencies with composer"
+      - name: "Install highest dependencies from composer.json"
         if: "matrix.dependencies == 'highest'"
         run: "composer update --no-interaction --no-progress --no-suggest"
 
@@ -268,10 +275,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v2.0.0"
+        uses: "actions/checkout@v2"
 
       - name: "Install PHP with extensions"
-        uses: "shivammathur/setup-php@2.0.2"
+        uses: "shivammathur/setup-php@v2"
         with:
           coverage: "xdebug"
           extensions: "${{ env.REQUIRED_PHP_EXTENSIONS }}"
@@ -282,21 +289,21 @@ jobs:
         run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         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 with composer"
+      - 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 with composer"
+      - name: "Install locked dependencies from composer.lock"
         if: "matrix.dependencies == 'locked'"
         run: "composer install --no-interaction --no-progress --no-suggest"
 
-      - name: "Install highest dependencies with composer"
+      - name: "Install highest dependencies from composer.json"
         if: "matrix.dependencies == 'highest'"
         run: "composer update --no-interaction --no-progress --no-suggest"
 
@@ -329,10 +336,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v2.0.0"
+        uses: "actions/checkout@v2"
 
       - name: "Install PHP with extensions"
-        uses: "shivammathur/setup-php@2.0.2"
+        uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
           extensions: "${{ env.REQUIRED_PHP_EXTENSIONS }}"
@@ -343,34 +350,24 @@ jobs:
         run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         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 with composer"
+      - 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 with composer"
+      - name: "Install locked dependencies from composer.lock"
         if: "matrix.dependencies == 'locked'"
         run: "composer install --no-interaction --no-progress --no-suggest"
 
-      - name: "Install highest dependencies with composer"
+      - name: "Install highest dependencies from composer.json"
         if: "matrix.dependencies == 'highest'"
         run: "composer update --no-interaction --no-progress --no-suggest"
 
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.1.2"
-        with:
-          path: "~/.composer/cache"
-          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('**/composer.lock') }}-phar"
-          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-phar"
-
-      - name: "Install locked dependencies with composer"
-        run: "composer install --no-interaction --no-progress --no-suggest"
-
       - name: "Require composer/composer"
         run: "composer require composer/composer:${{ env.COMPOSER_VERSION }} --no-interaction --no-progress --no-suggest"
 
diff --git a/.github/workflows/stale.yml b/.github/workflows/prune.yaml
similarity index 82%
rename from .github/workflows/stale.yml
rename to .github/workflows/prune.yaml
index 59f7b131..449e4652 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/prune.yaml
@@ -1,18 +1,20 @@
 # https://github.com/actions/stale
 
-name: "Stale"
+name: "Prune"
 
-on:
+on: # yamllint disable-line rule:truthy
   schedule:
     - cron: "0 12 * * *"
 
 jobs:
-  stale:
+  prune:
+    name: "Issues"
+
     runs-on: "ubuntu-latest"
 
     steps:
-      - name: "Close stale issues and pull requests"
-        uses: "actions/stale@v1.1.0"
+      - name: "Prune issues and pull requests"
+        uses: "actions/stale@v1"
         with:
           days-before-close: 5
           days-before-stale: 60
diff --git a/.github/workflows/continuous-deployment.yml b/.github/workflows/release.yaml
similarity index 79%
rename from .github/workflows/continuous-deployment.yml
rename to .github/workflows/release.yaml
index d24ec074..78772539 100644
--- a/.github/workflows/continuous-deployment.yml
+++ b/.github/workflows/release.yaml
@@ -1,8 +1,8 @@
 # https://help.github.com/en/categories/automating-your-workflow-with-github-actions
 
-name: "Continuous Deployment"
+name: "Release"
 
-on:
+on: # yamllint disable-line rule:truthy
   push:
     tags:
       - "**"
@@ -33,25 +33,38 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v2.0.0"
+        uses: "actions/checkout@v2"
 
       - name: "Install PHP with extensions"
-        uses: "shivammathur/setup-php@2.0.2"
+        uses: "shivammathur/setup-php@2"
         with:
           coverage: "none"
           extensions: "${{ env.REQUIRED_PHP_EXTENSIONS }}"
           php-version: "${{ matrix.php-version }}"
 
+      - name: "Determine composer cache directory"
+        id: "determine-composer-cache-directory"
+        run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
+
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         with:
-          path: "~/.composer/cache"
+          path: "${{ steps.determine-composer-cache-directory.outputs.directory }}"
           key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('**/composer.lock') }}-phar"
           restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-phar"
 
-      - name: "Install locked dependencies with composer"
+      - 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: "Require composer/composer"
         run: "composer require composer/composer:${{ env.COMPOSER_VERSION }} --no-interaction --no-progress --no-suggest"
 
@@ -94,7 +107,7 @@ jobs:
 
       - name: "Create release"
         id: "create-release"
-        uses: "actions/create-release@v1.0.0"
+        uses: "actions/create-release@v1"
         env:
           GITHUB_TOKEN: "${{ secrets.ERGEBNIS_BOT_TOKEN }}"
         with:
@@ -105,7 +118,7 @@ jobs:
 
       - name: "Upload composer-normalize.phar"
         if: "always()"
-        uses: "actions/upload-release-asset@v1.0.1"
+        uses: "actions/upload-release-asset@v1"
         env:
           GITHUB_TOKEN: "${{ secrets.ERGEBNIS_BOT_TOKEN }}"
         with:
@@ -116,7 +129,7 @@ jobs:
 
       - name: "Upload composer-normalize.phar.asc"
         if: "always()"
-        uses: "actions/upload-release-asset@v1.0.1"
+        uses: "actions/upload-release-asset@v1"
         env:
           GITHUB_TOKEN: "${{ secrets.ERGEBNIS_BOT_TOKEN }}"
         with:
diff --git a/.github/workflows/license.yml b/.github/workflows/renew.yaml
similarity index 87%
rename from .github/workflows/license.yml
rename to .github/workflows/renew.yaml
index a574f707..03a730b2 100644
--- a/.github/workflows/license.yml
+++ b/.github/workflows/renew.yaml
@@ -1,8 +1,8 @@
 # https://help.github.com/en/categories/automating-your-workflow-with-github-actions
 
-name: "License"
+name: "Renew"
 
-on:
+on: # yamllint disable-line rule:truthy
   schedule:
     - cron: "1 0 1 1 *"
 
@@ -25,10 +25,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v2.0.0"
+        uses: "actions/checkout@v2"
 
       - name: "Install PHP with extensions"
-        uses: "shivammathur/setup-php@2.0.2"
+        uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
           extensions: "${{ env.REQUIRED_PHP_EXTENSIONS }}"
@@ -42,21 +42,21 @@ jobs:
         run: "echo \"::set-output name=directory::$(composer config cache-dir)\""
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         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 with composer"
+      - 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 with composer"
+      - name: "Install locked dependencies from composer.lock"
         if: "matrix.dependencies == 'locked'"
         run: "composer install --no-interaction --no-progress --no-suggest"
 
-      - name: "Install highest dependencies with composer"
+      - name: "Install highest dependencies from composer.json"
         if: "matrix.dependencies == 'highest'"
         run: "composer update --no-interaction --no-progress --no-suggest"
 
@@ -64,7 +64,7 @@ jobs:
         run: "mkdir -p .build/php-cs-fixer"
 
       - name: "Cache cache directory for friendsofphp/php-cs-fixer"
-        uses: "actions/cache@v1.1.2"
+        uses: "actions/cache@v1"
         with:
           path: ".build/php-cs-fixer"
           key: "php-${{ matrix.php-version }}-php-cs-fixer-${{ hashFiles('**/composer.lock') }}"
diff --git a/.github/workflows/schema.yml b/.github/workflows/update.yaml
similarity index 94%
rename from .github/workflows/schema.yml
rename to .github/workflows/update.yaml
index ea3178a3..4ceccdbc 100644
--- a/.github/workflows/schema.yml
+++ b/.github/workflows/update.yaml
@@ -1,8 +1,8 @@
 # https://help.github.com/en/categories/automating-your-workflow-with-github-actions
 
-name: "Schema"
+name: "Update"
 
-on:
+on: # yamllint disable-line rule:truthy
   schedule:
     - cron: "0 9 * * *"
 
diff --git a/.php_cs b/.php_cs
index d452ff7f..ff2f3bcc 100644
--- a/.php_cs
+++ b/.php_cs
@@ -32,9 +32,9 @@ $config->getFinder()
     ->ignoreDotFiles(false)
     ->in(__DIR__)
     ->exclude([
-        '.build',
-        '.dependabot',
-        '.github',
+        '.build/',
+        '.dependabot/',
+        '.github/',
     ])
     ->name('.php_cs');
 
diff --git a/.yamllint.yaml b/.yamllint.yaml
new file mode 100644
index 00000000..17b1b556
--- /dev/null
+++ b/.yamllint.yaml
@@ -0,0 +1,65 @@
+extends: "default"
+
+ignore: |
+  .build/
+  vendor/
+
+rules:
+  braces:
+    max-spaces-inside-empty: 0
+    max-spaces-inside: 1
+    min-spaces-inside-empty: 0
+    min-spaces-inside: 1
+  brackets:
+    max-spaces-inside-empty: 0
+    max-spaces-inside: 0
+    min-spaces-inside-empty: 0
+    min-spaces-inside: 0
+  colons:
+    max-spaces-after: 1
+    max-spaces-before: 0
+  commas:
+    max-spaces-after: 1
+    max-spaces-before: 0
+    min-spaces-after: 1
+  comments:
+    ignore-shebangs: true
+    min-spaces-from-content: 1
+    require-starting-space: true
+  comments-indentation: "enable"
+  document-end:
+    present: false
+  document-start:
+    present: false
+  indentation:
+    check-multi-line-strings: true
+    indent-sequences: true
+    spaces: 2
+  empty-lines:
+    max-end: 0
+    max-start: 0
+    max: 1
+  empty-values:
+    forbid-in-block-mappings: true
+    forbid-in-flow-mappings: true
+  hyphens:
+    max-spaces-after: 2
+  key-duplicates: "enable"
+  key-ordering: "disable"
+  line-length: "disable"
+  new-line-at-end-of-file: "enable"
+  new-lines:
+    type: "unix"
+  octal-values:
+    forbid-implicit-octal: true
+  quoted-strings:
+    quote-type: "double"
+  trailing-spaces: "enable"
+  truthy:
+    allowed-values:
+      - "false"
+      - "true"
+
+yaml-files:
+  - '*.yaml'
+  - '*.yml'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a049ad7..d82eee00 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,8 +2,7 @@
 
 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).
+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
 
diff --git a/Makefile b/Makefile
index f74de086..6926b863 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,7 @@ code-coverage: vendor ## Collects coverage from running integration tests with p
 
 .PHONY: coding-standards
 coding-standards: vendor ## Fixes code style issues with friendsofphp/php-cs-fixer
+	yamllint -c .yamllint.yaml --strict .
 	mkdir -p .build/php-cs-fixer
 	vendor/bin/php-cs-fixer fix --config=.php_cs --diff --diff-format=udiff --verbose
 
diff --git a/README.md b/README.md
index 4ae95445..3164871b 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,10 @@
 # composer-normalize
 
-[![Continuous Deployment](https://github.com/ergebnis/composer-normalize/workflows/Continuous%20Deployment/badge.svg)](https://github.com/ergebnis/composer-normalize/actions)
-[![Continuous Integration](https://github.com/ergebnis/composer-normalize/workflows/Continuous%20Integration/badge.svg)](https://github.com/ergebnis/composer-normalize/actions)
-[![Schema](https://github.com/ergebnis/composer-normalize/workflows/Schema/badge.svg)](https://github.com/ergebnis/composer-normalize/actions)
+[![Integrate](https://github.com/ergebnis/php-library-template/workflows/Integrate/badge.svg?branch=master)](https://github.com/ergebnis/php-library-template/actions)
+[![Prune](https://github.com/ergebnis/php-library-template/workflows/Prune/badge.svg?branch=master)](https://github.com/ergebnis/php-library-template/actions)
+[![Release](https://github.com/ergebnis/php-library-template/workflows/Release/badge.svg?branch=master)](https://github.com/ergebnis/php-library-template/actions)
+[![Renew](https://github.com/ergebnis/php-library-template/workflows/Renew/badge.svg?branch=master)](https://github.com/ergebnis/php-library-template/actions)
+[![Update](https://github.com/ergebnis/php-library-template/workflows/Update/badge.svg?branch=master)](https://github.com/ergebnis/php-library-template/actions)
 
 [![Code Coverage](https://codecov.io/gh/ergebnis/composer-normalize/branch/master/graph/badge.svg)](https://codecov.io/gh/ergebnis/composer-normalize)
 [![Type Coverage](https://shepherd.dev/github/ergebnis/composer-normalize/coverage.svg)](https://shepherd.dev/github/ergebnis/composer-normalize)
diff --git a/phpstan.neon b/phpstan.neon
index 142f1bdc..b2f04a0a 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -11,6 +11,6 @@ parameters:
 	inferPrivatePropertyTypeFromConstructor: true
 	level: max
 	paths:
-		- src
-		- test
-	tmpDir: %currentWorkingDirectory%/.build/phpstan
+		- src/
+		- test/
+	tmpDir: %currentWorkingDirectory%/.build/phpstan/
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
index 4a1631e9..0eeb9ead 100644
--- a/psalm-baseline.xml
+++ b/psalm-baseline.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<files psalm-version="3.9.3@2e4154d76e24d1b4e59e6cc2bebef7790cb9e550">
+<files psalm-version="3.9.5@0cfe565d0afbcd31eadcc281b9017b5692911661">
   <file src="src/Application.php">
     <PropertyNotSetInConstructor occurrences="1">
       <code>Application</code>
diff --git a/psalm.xml b/psalm.xml
index 8da1112c..d645df4b 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -17,10 +17,10 @@
     </plugins>
 
     <projectFiles>
-        <directory name="src" />
-        <directory name="test" />
+        <directory name="src/" />
+        <directory name="test/" />
         <ignoreFiles>
-            <directory name="vendor" />
+            <directory name="vendor/" />
         </ignoreFiles>
     </projectFiles>
 </psalm>
diff --git a/test/Integration/phpunit.xml b/test/Integration/phpunit.xml
index 5cdbae97..a8e6125e 100644
--- a/test/Integration/phpunit.xml
+++ b/test/Integration/phpunit.xml
@@ -32,7 +32,7 @@
     </php>
     <filter>
         <whitelist addUncoveredFilesFromWhitelist="true" processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">../../src</directory>
+            <directory suffix=".php">../../src/</directory>
         </whitelist>
     </filter>
 </phpunit>
diff --git a/test/Unit/phpunit.xml b/test/Unit/phpunit.xml
index 07b9c636..5d606146 100644
--- a/test/Unit/phpunit.xml
+++ b/test/Unit/phpunit.xml
@@ -29,7 +29,7 @@
     </testsuites>
     <filter>
         <whitelist addUncoveredFilesFromWhitelist="true" processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">../../src</directory>
+            <directory suffix=".php">../../src/</directory>
         </whitelist>
     </filter>
 </phpunit>