diff --git a/.editorconfig b/.editorconfig
index 3aaad722..fe208953 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -10,6 +10,9 @@ trim_trailing_whitespace = true
 [*.json]
 indent_size = 2
 
+[*.md]
+indent_size = 2
+
 [*.neon]
 indent_style = tab
 
diff --git a/.gitattributes b/.gitattributes
index 203001cb..391a4384 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -5,7 +5,11 @@
 /.gitattributes                 export-ignore
 /.gitignore                     export-ignore
 /.php-cs-fixer.php              export-ignore
+/.yamllint.yaml                 export-ignore
 /composer-require-checker.json  export-ignore
+/composer.lock                  export-ignore
+/infection.json                 export-ignore
 /Makefile                       export-ignore
 /psalm-baseline.xml             export-ignore
 /psalm.xml                      export-ignore
+/rector.php                     export-ignore
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 01c24919..1d765050 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -1 +1,3 @@
+# https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners#codeowners-file-size
+
 * @ergebnis-bot @localheinz
diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 9ee55a6a..2455c52f 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -5,8 +5,8 @@ We are using [GitHub Actions](https://github.com/features/actions) as a continuo
 For details, take a look at the following workflow configuration files:
 
 - [`workflows/integrate.yaml`](workflows/integrate.yaml)
-- [`workflows/prune.yaml`](workflows/prune.yaml)
 - [`workflows/merge.yaml`](workflows/merge.yaml)
+- [`workflows/prune.yaml`](workflows/prune.yaml)
 - [`workflows/release.yaml`](workflows/release.yaml)
 - [`workflows/renew.yaml`](workflows/renew.yaml)
 - [`workflows/triage.yaml`](workflows/triage.yaml)
@@ -20,7 +20,7 @@ We are using [`yamllint`](https://github.com/adrienverge/yamllint) to enforce co
 If you do not have `yamllint` installed yet, run
 
 ```sh
-$ brew install yamllint
+brew install yamllint
 ```
 
 to install `yamllint`.
@@ -30,7 +30,7 @@ We are using [`friendsofphp/php-cs-fixer`](https://github.com/FriendsOfPHP/PHP-C
 Run
 
 ```sh
-$ make coding-standards
+make coding-standards
 ```
 
 to automatically fix coding standard violations.
@@ -42,11 +42,35 @@ We are using [`maglnet/composer-require-checker`](https://github.com/maglnet/Com
 Run
 
 ```sh
-$ make dependency-analysis
+make dependency-analysis
 ```
 
 to run a dependency analysis.
 
+## Refactoring
+
+We are using [`rector/rector`](https://github.com/rectorphp/rector) to automatically refactor code.
+
+Run
+
+```sh
+make refactoring
+```
+
+to automatically refactor code.
+
+## Security Analysis
+
+We are using [`composer`](https://github.com/composer/composer) to run a security analysis.
+
+Run
+
+```sh
+make security-analysis
+```
+
+to run a security analysis.
+
 ## Static Code Analysis
 
 We are using [`vimeo/psalm`](https://github.com/vimeo/psalm) to statically analyze the code.
@@ -54,7 +78,7 @@ We are using [`vimeo/psalm`](https://github.com/vimeo/psalm) to statically analy
 Run
 
 ```sh
-$ make static-code-analysis
+make static-code-analysis
 ```
 
 to run a static code analysis.
@@ -64,7 +88,7 @@ We are also using the baseline feature of [`vimeo/psalm`](https://psalm.dev/docs
 Run
 
 ```sh
-$ make static-code-analysis-baseline
+make static-code-analysis-baseline
 ```
 
 to regenerate the baseline in [`../psalm-baseline.xml`](../psalm-baseline.xml).
@@ -78,17 +102,29 @@ We are using [`phpunit/phpunit`](https://github.com/sebastianbergmann/phpunit) t
 Run
 
 ```sh
-$ make tests
+make tests
 ```
 
 to run all the tests.
 
+## Mutation Tests
+
+We are using [`infection/infection`](https://github.com/infection/infection) to ensure a minimum quality of the tests.
+
+Enable `Xdebug` and run
+
+```sh
+make mutation-tests
+```
+
+to run mutation tests.
+
 ## Extra lazy?
 
 Run
 
 ```sh
-$ make
+make
 ```
 
 to enforce coding standards, run a static code analysis, and run tests!
@@ -98,7 +134,7 @@ to enforce coding standards, run a static code analysis, and run tests!
 :bulb: Run
 
 ```sh
-$ make help
+make help
 ```
 
 to display a list of available targets with corresponding descriptions.
diff --git a/.github/settings.yml b/.github/settings.yml
index 2a0e7955..936015ce 100644
--- a/.github/settings.yml
+++ b/.github/settings.yml
@@ -13,21 +13,23 @@ branches:
         require_code_owner_reviews: true
         required_approving_review_count: 1
       required_status_checks:
-        contexts:
-          - "Code Coverage (8.0, locked)"
-          - "Coding Standards (8.0, locked)"
-          - "Dependency Analysis (8.0, locked)"
-          - "Security (8.0, locked)"
-          - "Static Code Analysis (8.0, locked)"
-          - "Tests (8.0, highest)"
-          - "Tests (8.0, locked)"
-          - "Tests (8.0, lowest)"
-          - "Tests (8.1, highest)"
-          - "Tests (8.1, locked)"
-          - "Tests (8.1, lowest)"
-          - "Tests (8.2, highest)"
-          - "Tests (8.2, locked)"
-          - "Tests (8.2, lowest)"
+        checks:
+          - context: "Code Coverage (8.0, locked)"
+          - context: "Coding Standards (8.0, locked)"
+          - context: "Dependency Analysis (8.0, locked)"
+          - context: "Mutation Tests (8.0, locked)"
+          - context: "Refactoring (8.0, locked)"
+          - context: "Security Analysis (8.0, locked)"
+          - context: "Static Code Analysis (8.0, locked)"
+          - context: "Tests (8.0, highest)"
+          - context: "Tests (8.0, locked)"
+          - context: "Tests (8.0, lowest)"
+          - context: "Tests (8.1, highest)"
+          - context: "Tests (8.1, locked)"
+          - context: "Tests (8.1, lowest)"
+          - context: "Tests (8.2, highest)"
+          - context: "Tests (8.2, locked)"
+          - context: "Tests (8.2, lowest)"
         strict: false
       restrictions:
 
@@ -79,6 +81,8 @@ repository:
   default_branch: "main"
   delete_branch_on_merge: true
   description: ":notebook: Provides a configuration factory and multiple rule sets for friendsofphp/php-cs-fixer."
+  enable_automated_security_fixes: true
+  enable_vulnerability_alerts: true
   has_downloads: true
   has_issues: true
   has_pages: false
diff --git a/.github/workflows/integrate.yaml b/.github/workflows/integrate.yaml
index 667bd150..13811bc9 100644
--- a/.github/workflows/integrate.yaml
+++ b/.github/workflows/integrate.yaml
@@ -24,10 +24,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v3.2.0"
 
       - name: "Set up PHP"
-        uses: "shivammathur/setup-php@2.23.0"
+        uses: "shivammathur/setup-php@2.22.0"
         with:
           coverage: "xdebug"
           extensions: "none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter"
@@ -43,7 +43,7 @@ jobs:
         uses: "ergebnis/.github/actions/composer/determine-cache-directory@1.7.0"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v3"
+        uses: "actions/cache@v3.0.11"
         with:
           path: "${{ env.COMPOSER_CACHE_DIR }}"
           key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
@@ -59,10 +59,11 @@ jobs:
           XDEBUG_MODE: "coverage"
         run: "vendor/bin/phpunit --colors=always --configuration=test/Unit/phpunit.xml --coverage-clover=.build/phpunit/logs/clover.xml"
 
-      - name: "Send code coverage report to Codecov.io"
-        env:
-          CODECOV_TOKEN: "${{ secrets.CODECOV_TOKEN }}"
-        run: "bash <(curl -s https://codecov.io/bash)"
+      - name: "Send code coverage report to codecov.io"
+        uses: "codecov/codecov-action@v3.1.1"
+        with:
+          files: ".build/phpunit/logs/clover.xml"
+          token: "${{ secrets.CODECOV_TOKEN }}"
 
   coding-standards:
     name: "Coding Standards"
@@ -79,17 +80,17 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v3.2.0"
 
       - name: "Lint YAML files"
-        uses: "ibiqlik/action-yamllint@v3.1"
+        uses: "ibiqlik/action-yamllint@v3.1.1"
         with:
           config_file: ".yamllint.yaml"
           file_or_dir: "."
           strict: true
 
       - name: "Set up PHP"
-        uses: "shivammathur/setup-php@2.23.0"
+        uses: "shivammathur/setup-php@2.22.0"
         with:
           coverage: "none"
           extensions: "none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter"
@@ -105,7 +106,7 @@ jobs:
         uses: "ergebnis/.github/actions/composer/determine-cache-directory@1.7.0"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v3"
+        uses: "actions/cache@v3.0.11"
         with:
           path: "${{ env.COMPOSER_CACHE_DIR }}"
           key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
@@ -123,7 +124,7 @@ jobs:
         run: "mkdir -p .build/php-cs-fixer"
 
       - name: "Cache cache directory for friendsofphp/php-cs-fixer"
-        uses: "actions/cache@v3"
+        uses: "actions/cache@v3.0.11"
         with:
           path: ".build/php-cs-fixer"
           key: "php-${{ matrix.php-version }}-php-cs-fixer-${{ github.ref_name }}"
@@ -132,7 +133,7 @@ jobs:
             php-${{ matrix.php-version }}-php-cs-fixer-
 
       - name: "Run friendsofphp/php-cs-fixer"
-        run: "vendor/bin/php-cs-fixer fix --config=.php-cs-fixer.php --diff --dry-run --verbose"
+        run: "vendor/bin/php-cs-fixer fix --ansi --config=.php-cs-fixer.php --diff --dry-run --verbose"
 
   dependency-analysis:
     name: "Dependency Analysis"
@@ -149,10 +150,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v3.2.0"
 
       - name: "Set up PHP"
-        uses: "shivammathur/setup-php@2.23.0"
+        uses: "shivammathur/setup-php@2.22.0"
         with:
           coverage: "none"
           extensions: "none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter"
@@ -165,7 +166,7 @@ jobs:
         uses: "ergebnis/.github/actions/composer/determine-cache-directory@1.7.0"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v3"
+        uses: "actions/cache@v3.0.11"
         with:
           path: "${{ env.COMPOSER_CACHE_DIR }}"
           key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
@@ -179,8 +180,112 @@ jobs:
       - name: "Run maglnet/composer-require-checker"
         run: ".phive/composer-require-checker check --config-file=$(pwd)/composer-require-checker.json"
 
-  security:
-    name: "Security"
+  mutation-tests:
+    name: "Mutation Tests"
+
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      matrix:
+        php-version:
+          - "8.0"
+
+        dependencies:
+          - "locked"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v3.2.0"
+
+      - name: "Set up PHP"
+        uses: "shivammathur/setup-php@2.22.0"
+        with:
+          coverage: "xdebug"
+          extensions: "none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter"
+          php-version: "${{ matrix.php-version }}"
+
+      - name: "Set up problem matchers for PHP"
+        run: "echo \"::add-matcher::${{ runner.tool_cache }}/php.json\""
+
+      - name: "Determine composer cache directory"
+        uses: "ergebnis/.github/actions/composer/determine-cache-directory@1.7.0"
+
+      - name: "Cache dependencies installed with composer"
+        uses: "actions/cache@v3.0.11"
+        with:
+          path: "${{ env.COMPOSER_CACHE_DIR }}"
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
+
+      - name: "Install ${{ matrix.dependencies }} dependencies with composer"
+        uses: "ergebnis/.github/actions/composer/install@1.7.0"
+        with:
+          dependencies: "${{ matrix.dependencies }}"
+
+      - name: "Run mutation tests with Xdebug and infection/infection"
+        env:
+          XDEBUG_MODE: "coverage"
+        run: "vendor/bin/infection --ansi --configuration=infection.json --logger-github"
+
+  refactoring:
+    name: "Refactoring"
+
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      matrix:
+        php-version:
+          - "8.0"
+
+        dependencies:
+          - "locked"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v3.2.0"
+
+      - name: "Set up PHP"
+        uses: "shivammathur/setup-php@2.22.0"
+        with:
+          coverage: "none"
+          extensions: "none, ctype, dom, intl, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter"
+          php-version: "${{ matrix.php-version }}"
+
+      - name: "Set up problem matchers for PHP"
+        run: "echo \"::add-matcher::${{ runner.tool_cache }}/php.json\""
+
+      - name: "Determine composer cache directory"
+        uses: "ergebnis/.github/actions/composer/determine-cache-directory@1.7.0"
+
+      - name: "Cache dependencies installed with composer"
+        uses: "actions/cache@v3.0.11"
+        with:
+          path: "${{ env.COMPOSER_CACHE_DIR }}"
+          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
+          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
+
+      - name: "Install ${{ matrix.dependencies }} dependencies with composer"
+        uses: "ergebnis/.github/actions/composer/install@1.7.0"
+        with:
+          dependencies: "${{ matrix.dependencies }}"
+
+      - name: "Create cache directory for rector/rector"
+        run: "mkdir -p .build/rector"
+
+      - name: "Cache cache directory for rector/rector"
+        uses: "actions/cache@v3.0.11"
+        with:
+          path: ".build/rector"
+          key: "php-${{ matrix.php-version }}-rector-${{ github.ref_name }}"
+          restore-keys: |
+            php-${{ matrix.php-version }}-rector-main
+            php-${{ matrix.php-version }}-rector-
+
+      - name: "Run automated refactoring with rector/rector"
+        run: "vendor/bin/rector --ansi --config=rector.php --dry-run"
+
+  security-analysis:
+    name: "Security Analysis"
 
     runs-on: "ubuntu-latest"
 
@@ -194,10 +299,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v3.0.2"
+        uses: "actions/checkout@v3.2.0"
 
       - name: "Set up PHP"
-        uses: "shivammathur/setup-php@2.23.0"
+        uses: "shivammathur/setup-php@2.22.0"
         with:
           coverage: "none"
           extensions: "none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter"
@@ -210,7 +315,7 @@ jobs:
         run: "composer validate --ansi --strict"
 
       - name: "Check installed packages for security vulnerability advisories"
-        run: "composer audit"
+        run: "composer audit --ansi"
 
   static-code-analysis:
     name: "Static Code Analysis"
@@ -227,10 +332,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v3.2.0"
 
       - name: "Set up PHP"
-        uses: "shivammathur/setup-php@2.23.0"
+        uses: "shivammathur/setup-php@2.22.0"
         with:
           coverage: "none"
           extensions: "none, ctype, curl, dom, json, mbstring, pcntl, phar, posix, simplexml, tokenizer, xml, xmlwriter"
@@ -243,7 +348,7 @@ jobs:
         uses: "ergebnis/.github/actions/composer/determine-cache-directory@1.7.0"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v3"
+        uses: "actions/cache@v3.0.11"
         with:
           path: "${{ env.COMPOSER_CACHE_DIR }}"
           key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
@@ -279,10 +384,10 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v3.2.0"
 
       - name: "Set up PHP"
-        uses: "shivammathur/setup-php@2.23.0"
+        uses: "shivammathur/setup-php@2.22.0"
         with:
           coverage: "none"
           extensions: "none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter"
@@ -298,7 +403,7 @@ jobs:
         uses: "ergebnis/.github/actions/composer/determine-cache-directory@1.7.0"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v3"
+        uses: "actions/cache@v3.0.11"
         with:
           path: "${{ env.COMPOSER_CACHE_DIR }}"
           key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
diff --git a/.github/workflows/merge.yaml b/.github/workflows/merge.yaml
index 07345074..63c52273 100644
--- a/.github/workflows/merge.yaml
+++ b/.github/workflows/merge.yaml
@@ -33,8 +33,8 @@ jobs:
       - name: "Assign @ergebnis-bot"
         uses: "ergebnis/.github/actions/github/pull-request/add-assignee@1.7.0"
         with:
-          github-token: "${{ secrets.ERGEBNIS_BOT_TOKEN }}"
           assignee: "ergebnis-bot"
+          github-token: "${{ secrets.ERGEBNIS_BOT_TOKEN }}"
 
       - name: "Approve pull request"
         uses: "ergebnis/.github/actions/github/pull-request/approve@1.7.0"
diff --git a/.github/workflows/prune.yaml b/.github/workflows/prune.yaml
index 21adc2d8..6fc9e003 100644
--- a/.github/workflows/prune.yaml
+++ b/.github/workflows/prune.yaml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: "Prune issues and pull requests"
-        uses: "actions/stale@v7"
+        uses: "actions/stale@v6.0.1"
         with:
           days-before-close: "${{ env.DAYS_BEFORE_CLOSE }}"
           days-before-stale: "${{ env.DAYS_BEFORE_STALE }}"
diff --git a/.github/workflows/renew.yaml b/.github/workflows/renew.yaml
index eca80114..a6653151 100644
--- a/.github/workflows/renew.yaml
+++ b/.github/workflows/renew.yaml
@@ -22,12 +22,12 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v3.2.0"
         with:
           token: "${{ secrets.ERGEBNIS_BOT_TOKEN }}"
 
       - name: "Set up PHP"
-        uses: "shivammathur/setup-php@2.23.0"
+        uses: "shivammathur/setup-php@2.22.0"
         with:
           coverage: "none"
           extensions: "none, ctype, dom, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter"
@@ -43,7 +43,7 @@ jobs:
         uses: "ergebnis/.github/actions/composer/determine-cache-directory@1.7.0"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v3"
+        uses: "actions/cache@v3.0.11"
         with:
           path: "${{ env.COMPOSER_CACHE_DIR }}"
           key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
@@ -58,7 +58,7 @@ jobs:
         run: "mkdir -p .build/php-cs-fixer"
 
       - name: "Cache cache directory for friendsofphp/php-cs-fixer"
-        uses: "actions/cache@v3"
+        uses: "actions/cache@v3.0.11"
         with:
           path: ".build/php-cs-fixer"
           key: "php-${{ matrix.php-version }}-php-cs-fixer-${{ github.ref_name }}"
@@ -67,7 +67,7 @@ jobs:
             php-${{ matrix.php-version }}-php-cs-fixer-
 
       - name: "Run friendsofphp/php-cs-fixer"
-        run: "vendor/bin/php-cs-fixer fix --config=.php-cs-fixer.php --diff --verbose"
+        run: "vendor/bin/php-cs-fixer fix --ansi --config=.php-cs-fixer.php --diff --verbose"
 
       - name: "Commit modified files"
         uses: "stefanzweifel/git-auto-commit-action@v4.16.0"
diff --git a/.phive/composer-require-checker b/.phive/composer-require-checker
index 660d495b..a1905088 100755
Binary files a/.phive/composer-require-checker and b/.phive/composer-require-checker differ
diff --git a/.phive/phars.xml b/.phive/phars.xml
index d7a8a866..2d3fdb2d 100644
--- a/.phive/phars.xml
+++ b/.phive/phars.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-  <phar name="composer-require-checker" version="^4.3.0" installed="4.3.0" location="./.phive/composer-require-checker" copy="true"/>
+  <phar name="composer-require-checker" version="^4.4.0" installed="4.4.0" location="./.phive/composer-require-checker" copy="true"/>
 </phive>
diff --git a/Makefile b/Makefile
index 39dab100..d9045ee3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 .PHONY: it
-it: coding-standards static-code-analysis tests ## Runs the coding-standards, static-code-analysis, and tests targets
+it: refactoring coding-standards security-analysis static-code-analysis tests ## Runs the refactoring, coding-standards, security-analysis, static-code-analysis, and tests targets
 
 .PHONY: code-coverage
 code-coverage: vendor ## Collects coverage from running unit tests with phpunit/phpunit
@@ -7,9 +7,9 @@ code-coverage: vendor ## Collects coverage from running unit tests with phpunit/
 	vendor/bin/phpunit --configuration=test/Unit/phpunit.xml --coverage-text
 
 .PHONY: coding-standards
-coding-standards: vendor ## Normalizes composer.json with ergebnis/composer-normalize, lints YAML files with yamllint and fixes code style issues with friendsofphp/php-cs-fixer
-	composer normalize
+coding-standards: vendor ## Lints YAML files with yamllint, normalizes composer.json with ergebnis/composer-normalize, and fixes code style issues with friendsofphp/php-cs-fixer
 	yamllint -c .yamllint.yaml --strict .
+	composer normalize
 	mkdir -p .build/php-cs-fixer
 	vendor/bin/php-cs-fixer fix --config=.php-cs-fixer.php --diff --verbose
 
@@ -21,14 +21,29 @@ dependency-analysis: vendor ## Runs a dependency analysis with maglnet/composer-
 help: ## Displays this list of targets with descriptions
 	@grep -E '^[a-zA-Z0-9_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[32m%-30s\033[0m %s\n", $$1, $$2}'
 
+.PHONY: mutation-tests
+mutation-tests: vendor ## Runs mutation tests with infection/infection
+	mkdir -p .build/infection
+	vendor/bin/infection --configuration=infection.json
+
+.PHONY: refactoring
+refactoring: vendor ## Runs automated refactoring with rector/rector
+	vendor/bin/rector process --config=rector.php
+
+.PHONY: security-analysis
+security-analysis: vendor ## Runs a security analysis with composer
+	composer audit
+
 .PHONY: static-code-analysis
 static-code-analysis: vendor ## Runs a static code analysis with vimeo/psalm
 	mkdir -p .build/psalm
-	vendor/bin/psalm --config=psalm.xml --diff --show-info=false --stats --threads=4
+	vendor/bin/psalm --config=psalm.xml --clear-cache
+	vendor/bin/psalm --config=psalm.xml --show-info=false --stats --threads=4
 
 .PHONY: static-code-analysis-baseline
 static-code-analysis-baseline: vendor ## Generates a baseline for static code analysis with vimeo/psalm
 	mkdir -p .build/psalm
+	vendor/bin/psalm --config=psalm.xml --clear-cache
 	vendor/bin/psalm --config=psalm.xml --set-baseline=psalm-baseline.xml
 
 .PHONY: tests
@@ -40,4 +55,3 @@ tests: vendor ## Runs unit and end-to-end tests with phpunit/phpunit
 vendor: composer.json composer.lock
 	composer validate --strict
 	composer install --no-interaction --no-progress
-	composer audit
diff --git a/README.md b/README.md
index 26534c1e..95135785 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ Provides a configuration factory and multiple rule sets for [`friendsofphp/php-c
 Run
 
 ```sh
-$ composer require --dev ergebnis/php-cs-fixer-config
+composer require --dev ergebnis/php-cs-fixer-config
 ```
 
 ## Usage
diff --git a/composer.json b/composer.json
index b1e99d55..a557a051 100644
--- a/composer.json
+++ b/composer.json
@@ -23,8 +23,10 @@
     "ergebnis/composer-normalize": "^2.29.0",
     "ergebnis/license": "^2.1.0",
     "fakerphp/faker": "^1.21.0",
+    "infection/infection": "~0.26.6",
     "phpunit/phpunit": "^9.5.27",
     "psalm/plugin-phpunit": "~0.18.4",
+    "rector/rector": "~0.15.2",
     "symfony/filesystem": "^5.0.0 || ^6.0.0",
     "symfony/process": "^5.0.0 || ^6.0.0",
     "vimeo/psalm": "^5.4.0"
@@ -42,7 +44,8 @@
   "config": {
     "allow-plugins": {
       "composer/package-versions-deprecated": true,
-      "ergebnis/composer-normalize": true
+      "ergebnis/composer-normalize": true,
+      "infection/extension-installer": true
     },
     "platform": {
       "php": "8.0.25"
diff --git a/composer.lock b/composer.lock
index 02fa2dd0..97266812 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "2a2e8f16725addadee5948e16fa1c631",
+    "content-hash": "efa3353c4c53e4aeff27209d6c30e9cc",
     "packages": [
         {
             "name": "composer/pcre",
@@ -2243,6 +2243,97 @@
             ],
             "time": "2021-03-30T17:13:30+00:00"
         },
+        {
+            "name": "colinodell/json5",
+            "version": "v2.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/colinodell/json5.git",
+                "reference": "15b063f8cb5e6deb15f0cd39123264ec0d19c710"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/colinodell/json5/zipball/15b063f8cb5e6deb15f0cd39123264ec0d19c710",
+                "reference": "15b063f8cb5e6deb15f0cd39123264ec0d19c710",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "ext-mbstring": "*",
+                "php": "^7.1.3|^8.0"
+            },
+            "conflict": {
+                "scrutinizer/ocular": "1.7.*"
+            },
+            "require-dev": {
+                "mikehaertl/php-shellcommand": "^1.2.5",
+                "phpstan/phpstan": "^1.4",
+                "scrutinizer/ocular": "^1.6",
+                "squizlabs/php_codesniffer": "^2.3 || ^3.0",
+                "symfony/finder": "^4.4|^5.4|^6.0",
+                "symfony/phpunit-bridge": "^5.4|^6.0"
+            },
+            "bin": [
+                "bin/json5"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "src/global.php"
+                ],
+                "psr-4": {
+                    "ColinODell\\Json5\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Colin O'Dell",
+                    "email": "colinodell@gmail.com",
+                    "homepage": "https://www.colinodell.com",
+                    "role": "Developer"
+                }
+            ],
+            "description": "UTF-8 compatible JSON5 parser for PHP",
+            "homepage": "https://github.com/colinodell/json5",
+            "keywords": [
+                "JSON5",
+                "json",
+                "json5_decode",
+                "json_decode"
+            ],
+            "support": {
+                "issues": "https://github.com/colinodell/json5/issues",
+                "source": "https://github.com/colinodell/json5/tree/v2.3.0"
+            },
+            "funding": [
+                {
+                    "url": "https://www.colinodell.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://www.paypal.me/colinpodell/10.00",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/colinodell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://www.patreon.com/colinodell",
+                    "type": "patreon"
+                }
+            ],
+            "time": "2022-12-27T16:44:40+00:00"
+        },
         {
             "name": "composer/package-versions-deprecated",
             "version": "1.11.99.5",
@@ -2971,6 +3062,309 @@
             ],
             "time": "2022-12-16T22:01:02+00:00"
         },
+        {
+            "name": "infection/abstract-testframework-adapter",
+            "version": "0.5.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/infection/abstract-testframework-adapter.git",
+                "reference": "18925e20d15d1a5995bb85c9dc09e8751e1e069b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/infection/abstract-testframework-adapter/zipball/18925e20d15d1a5995bb85c9dc09e8751e1e069b",
+                "reference": "18925e20d15d1a5995bb85c9dc09e8751e1e069b",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.4 || ^8.0"
+            },
+            "require-dev": {
+                "ergebnis/composer-normalize": "^2.8",
+                "friendsofphp/php-cs-fixer": "^2.17",
+                "phpunit/phpunit": "^9.5"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Infection\\AbstractTestFramework\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Maks Rafalko",
+                    "email": "maks.rafalko@gmail.com"
+                }
+            ],
+            "description": "Abstract Test Framework Adapter for Infection",
+            "support": {
+                "issues": "https://github.com/infection/abstract-testframework-adapter/issues",
+                "source": "https://github.com/infection/abstract-testframework-adapter/tree/0.5.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/infection",
+                    "type": "github"
+                },
+                {
+                    "url": "https://opencollective.com/infection",
+                    "type": "open_collective"
+                }
+            ],
+            "time": "2021-08-17T18:49:12+00:00"
+        },
+        {
+            "name": "infection/extension-installer",
+            "version": "0.1.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/infection/extension-installer.git",
+                "reference": "9b351d2910b9a23ab4815542e93d541e0ca0cdcf"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/infection/extension-installer/zipball/9b351d2910b9a23ab4815542e93d541e0ca0cdcf",
+                "reference": "9b351d2910b9a23ab4815542e93d541e0ca0cdcf",
+                "shasum": ""
+            },
+            "require": {
+                "composer-plugin-api": "^1.1 || ^2.0"
+            },
+            "require-dev": {
+                "composer/composer": "^1.9 || ^2.0",
+                "friendsofphp/php-cs-fixer": "^2.18, <2.19",
+                "infection/infection": "^0.15.2",
+                "php-coveralls/php-coveralls": "^2.4",
+                "phpstan/extension-installer": "^1.0",
+                "phpstan/phpstan": "^0.12.10",
+                "phpstan/phpstan-phpunit": "^0.12.6",
+                "phpstan/phpstan-strict-rules": "^0.12.2",
+                "phpstan/phpstan-webmozart-assert": "^0.12.2",
+                "phpunit/phpunit": "^9.5",
+                "vimeo/psalm": "^4.8"
+            },
+            "type": "composer-plugin",
+            "extra": {
+                "class": "Infection\\ExtensionInstaller\\Plugin"
+            },
+            "autoload": {
+                "psr-4": {
+                    "Infection\\ExtensionInstaller\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Maks Rafalko",
+                    "email": "maks.rafalko@gmail.com"
+                }
+            ],
+            "description": "Infection Extension Installer",
+            "support": {
+                "issues": "https://github.com/infection/extension-installer/issues",
+                "source": "https://github.com/infection/extension-installer/tree/0.1.2"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/infection",
+                    "type": "github"
+                },
+                {
+                    "url": "https://opencollective.com/infection",
+                    "type": "open_collective"
+                }
+            ],
+            "time": "2021-10-20T22:08:34+00:00"
+        },
+        {
+            "name": "infection/include-interceptor",
+            "version": "0.2.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/infection/include-interceptor.git",
+                "reference": "0cc76d95a79d9832d74e74492b0a30139904bdf7"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/infection/include-interceptor/zipball/0cc76d95a79d9832d74e74492b0a30139904bdf7",
+                "reference": "0cc76d95a79d9832d74e74492b0a30139904bdf7",
+                "shasum": ""
+            },
+            "require-dev": {
+                "friendsofphp/php-cs-fixer": "^2.16",
+                "infection/infection": "^0.15.0",
+                "phan/phan": "^2.4 || ^3",
+                "php-coveralls/php-coveralls": "^2.2",
+                "phpstan/phpstan": "^0.12.8",
+                "phpunit/phpunit": "^8.5",
+                "vimeo/psalm": "^3.8"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Infection\\StreamWrapper\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Maks Rafalko",
+                    "email": "maks.rafalko@gmail.com"
+                }
+            ],
+            "description": "Stream Wrapper: Include Interceptor. Allows to replace included (autoloaded) file with another one.",
+            "support": {
+                "issues": "https://github.com/infection/include-interceptor/issues",
+                "source": "https://github.com/infection/include-interceptor/tree/0.2.5"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/infection",
+                    "type": "github"
+                },
+                {
+                    "url": "https://opencollective.com/infection",
+                    "type": "open_collective"
+                }
+            ],
+            "time": "2021-08-09T10:03:57+00:00"
+        },
+        {
+            "name": "infection/infection",
+            "version": "0.26.16",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/infection/infection.git",
+                "reference": "d646aafe530ba21b8479694cd151570c93c72312"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/infection/infection/zipball/d646aafe530ba21b8479694cd151570c93c72312",
+                "reference": "d646aafe530ba21b8479694cd151570c93c72312",
+                "shasum": ""
+            },
+            "require": {
+                "colinodell/json5": "^2.2",
+                "composer-runtime-api": "^2.0",
+                "composer/xdebug-handler": "^2.0 || ^3.0",
+                "ext-dom": "*",
+                "ext-json": "*",
+                "ext-libxml": "*",
+                "ext-mbstring": "*",
+                "infection/abstract-testframework-adapter": "^0.5.0",
+                "infection/extension-installer": "^0.1.0",
+                "infection/include-interceptor": "^0.2.5",
+                "justinrainbow/json-schema": "^5.2.10",
+                "nikic/php-parser": "^4.13.2",
+                "ondram/ci-detector": "^4.1.0",
+                "php": "^8.0",
+                "sanmai/later": "^0.1.1",
+                "sanmai/pipeline": "^5.1 || ^6",
+                "sebastian/diff": "^3.0.2 || ^4.0",
+                "symfony/console": "^5.4 || ^6.0",
+                "symfony/filesystem": "^5.4 || ^6.0",
+                "symfony/finder": "^5.4 || ^6.0",
+                "symfony/process": "^5.4 || ^6.0",
+                "thecodingmachine/safe": "^2.1.2",
+                "webmozart/assert": "^1.3"
+            },
+            "conflict": {
+                "dg/bypass-finals": "<1.4.1",
+                "phpunit/php-code-coverage": ">9 <9.1.4"
+            },
+            "require-dev": {
+                "brianium/paratest": "^6.3",
+                "ext-simplexml": "*",
+                "helmich/phpunit-json-assert": "^3.0",
+                "phpspec/prophecy-phpunit": "^2.0",
+                "phpstan/extension-installer": "^1.1.0",
+                "phpstan/phpstan": "^1.3.0",
+                "phpstan/phpstan-phpunit": "^1.0.0",
+                "phpstan/phpstan-strict-rules": "^1.1.0",
+                "phpstan/phpstan-webmozart-assert": "^1.0.2",
+                "phpunit/phpunit": "^9.5.5",
+                "symfony/phpunit-bridge": "^5.4 || ^6.0",
+                "symfony/yaml": "^5.4 || ^6.0",
+                "thecodingmachine/phpstan-safe-rule": "^1.2.0"
+            },
+            "bin": [
+                "bin/infection"
+            ],
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Infection\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Maks Rafalko",
+                    "email": "maks.rafalko@gmail.com",
+                    "homepage": "https://twitter.com/maks_rafalko"
+                },
+                {
+                    "name": "Oleg Zhulnev",
+                    "homepage": "https://github.com/sidz"
+                },
+                {
+                    "name": "Gert de Pagter",
+                    "homepage": "https://github.com/BackEndTea"
+                },
+                {
+                    "name": "Théo FIDRY",
+                    "email": "theo.fidry@gmail.com",
+                    "homepage": "https://twitter.com/tfidry"
+                },
+                {
+                    "name": "Alexey Kopytko",
+                    "email": "alexey@kopytko.com",
+                    "homepage": "https://www.alexeykopytko.com"
+                },
+                {
+                    "name": "Andreas Möller",
+                    "email": "am@localheinz.com",
+                    "homepage": "https://localheinz.com"
+                }
+            ],
+            "description": "Infection is a Mutation Testing framework for PHP. The mutation adequacy score can be used to measure the effectiveness of a test set in terms of its ability to detect faults.",
+            "keywords": [
+                "coverage",
+                "mutant",
+                "mutation framework",
+                "mutation testing",
+                "testing",
+                "unit testing"
+            ],
+            "support": {
+                "issues": "https://github.com/infection/infection/issues",
+                "source": "https://github.com/infection/infection/tree/0.26.16"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/infection",
+                    "type": "github"
+                },
+                {
+                    "url": "https://opencollective.com/infection",
+                    "type": "open_collective"
+                }
+            ],
+            "time": "2022-10-22T10:07:33+00:00"
+        },
         {
             "name": "justinrainbow/json-schema",
             "version": "5.2.12",
@@ -3267,6 +3661,84 @@
             },
             "time": "2022-11-12T15:38:23+00:00"
         },
+        {
+            "name": "ondram/ci-detector",
+            "version": "4.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/OndraM/ci-detector.git",
+                "reference": "8a4b664e916df82ff26a44709942dfd593fa6f30"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/OndraM/ci-detector/zipball/8a4b664e916df82ff26a44709942dfd593fa6f30",
+                "reference": "8a4b664e916df82ff26a44709942dfd593fa6f30",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1 || ^8.0"
+            },
+            "require-dev": {
+                "ergebnis/composer-normalize": "^2.2",
+                "lmc/coding-standard": "^1.3 || ^2.1",
+                "php-parallel-lint/php-parallel-lint": "^1.2",
+                "phpstan/extension-installer": "^1.0.5",
+                "phpstan/phpstan": "^0.12.58",
+                "phpstan/phpstan-phpunit": "^0.12.16",
+                "phpunit/phpunit": "^7.1 || ^8.0 || ^9.0"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "OndraM\\CiDetector\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ondřej Machulda",
+                    "email": "ondrej.machulda@gmail.com"
+                }
+            ],
+            "description": "Detect continuous integration environment and provide unified access to properties of current build",
+            "keywords": [
+                "CircleCI",
+                "Codeship",
+                "Wercker",
+                "adapter",
+                "appveyor",
+                "aws",
+                "aws codebuild",
+                "azure",
+                "azure devops",
+                "azure pipelines",
+                "bamboo",
+                "bitbucket",
+                "buddy",
+                "ci-info",
+                "codebuild",
+                "continuous integration",
+                "continuousphp",
+                "devops",
+                "drone",
+                "github",
+                "gitlab",
+                "interface",
+                "jenkins",
+                "pipelines",
+                "sourcehut",
+                "teamcity",
+                "travis"
+            ],
+            "support": {
+                "issues": "https://github.com/OndraM/ci-detector/issues",
+                "source": "https://github.com/OndraM/ci-detector/tree/4.1.0"
+            },
+            "time": "2021-04-14T09:16:52+00:00"
+        },
         {
             "name": "phar-io/manifest",
             "version": "2.0.3",
@@ -3543,6 +4015,65 @@
             },
             "time": "2022-10-14T12:47:21+00:00"
         },
+        {
+            "name": "phpstan/phpstan",
+            "version": "1.9.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpstan.git",
+                "reference": "d03bccee595e2146b7c9d174486b84f4dc61b0f2"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/d03bccee595e2146b7c9d174486b84f4dc61b0f2",
+                "reference": "d03bccee595e2146b7c9d174486b84f4dc61b0f2",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2|^8.0"
+            },
+            "conflict": {
+                "phpstan/phpstan-shim": "*"
+            },
+            "bin": [
+                "phpstan",
+                "phpstan.phar"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPStan - PHP Static Analysis Tool",
+            "keywords": [
+                "dev",
+                "static analysis"
+            ],
+            "support": {
+                "issues": "https://github.com/phpstan/phpstan/issues",
+                "source": "https://github.com/phpstan/phpstan/tree/1.9.4"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/ondrejmirtes",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/phpstan",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/phpstan/phpstan",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-12-17T13:33:52+00:00"
+        },
         {
             "name": "phpunit/php-code-coverage",
             "version": "9.2.19",
@@ -4023,6 +4554,185 @@
             },
             "time": "2022-12-03T07:47:07+00:00"
         },
+        {
+            "name": "rector/rector",
+            "version": "0.15.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/rectorphp/rector.git",
+                "reference": "5bc89fa73d0be2769e02e49a0e924c95b1842093"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/rectorphp/rector/zipball/5bc89fa73d0be2769e02e49a0e924c95b1842093",
+                "reference": "5bc89fa73d0be2769e02e49a0e924c95b1842093",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2|^8.0",
+                "phpstan/phpstan": "^1.9.4"
+            },
+            "conflict": {
+                "rector/rector-doctrine": "*",
+                "rector/rector-downgrade-php": "*",
+                "rector/rector-php-parser": "*",
+                "rector/rector-phpunit": "*",
+                "rector/rector-symfony": "*"
+            },
+            "bin": [
+                "bin/rector"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "0.14-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Instant Upgrade and Automated Refactoring of any PHP code",
+            "support": {
+                "issues": "https://github.com/rectorphp/rector/issues",
+                "source": "https://github.com/rectorphp/rector/tree/0.15.2"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/tomasvotruba",
+                    "type": "github"
+                }
+            ],
+            "time": "2022-12-24T12:55:36+00:00"
+        },
+        {
+            "name": "sanmai/later",
+            "version": "0.1.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sanmai/later.git",
+                "reference": "9b659fecef2030193fd02402955bc39629d5606f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sanmai/later/zipball/9b659fecef2030193fd02402955bc39629d5606f",
+                "reference": "9b659fecef2030193fd02402955bc39629d5606f",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "require-dev": {
+                "friendsofphp/php-cs-fixer": "^2.13",
+                "infection/infection": ">=0.10.5",
+                "phan/phan": ">=2",
+                "php-coveralls/php-coveralls": "^2.0",
+                "phpstan/phpstan": ">=0.10",
+                "phpunit/phpunit": ">=7.4",
+                "vimeo/psalm": ">=2"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "src/functions.php"
+                ],
+                "psr-4": {
+                    "Later\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Apache-2.0"
+            ],
+            "authors": [
+                {
+                    "name": "Alexey Kopytko",
+                    "email": "alexey@kopytko.com"
+                }
+            ],
+            "description": "Later: deferred wrapper object",
+            "support": {
+                "issues": "https://github.com/sanmai/later/issues",
+                "source": "https://github.com/sanmai/later/tree/0.1.2"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sanmai",
+                    "type": "github"
+                }
+            ],
+            "time": "2021-01-02T10:26:44+00:00"
+        },
+        {
+            "name": "sanmai/pipeline",
+            "version": "v6.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sanmai/pipeline.git",
+                "reference": "929b115ca58d62b6b2574702df1ebde4562c7c43"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sanmai/pipeline/zipball/929b115ca58d62b6b2574702df1ebde4562c7c43",
+                "reference": "929b115ca58d62b6b2574702df1ebde4562c7c43",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1 || ^8.0"
+            },
+            "require-dev": {
+                "ergebnis/composer-normalize": "^2.8",
+                "friendsofphp/php-cs-fixer": "^3",
+                "infection/infection": ">=0.10.5",
+                "league/pipeline": "^1.0 || ^0.3",
+                "phan/phan": ">=1.1",
+                "php-coveralls/php-coveralls": "^2.4.1",
+                "phpstan/phpstan": ">=0.10",
+                "phpunit/phpunit": "^7.4 || ^8.1 || ^9.4",
+                "vimeo/psalm": ">=2"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "v6.x-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "src/functions.php"
+                ],
+                "psr-4": {
+                    "Pipeline\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Apache-2.0"
+            ],
+            "authors": [
+                {
+                    "name": "Alexey Kopytko",
+                    "email": "alexey@kopytko.com"
+                }
+            ],
+            "description": "General-purpose collections pipeline",
+            "support": {
+                "issues": "https://github.com/sanmai/pipeline/issues",
+                "source": "https://github.com/sanmai/pipeline/tree/v6.3"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sanmai",
+                    "type": "github"
+                }
+            ],
+            "time": "2022-11-30T06:07:06+00:00"
+        },
         {
             "name": "sebastian/cli-parser",
             "version": "1.0.1",
@@ -4985,6 +5695,145 @@
             ],
             "time": "2022-12-13T09:08:39+00:00"
         },
+        {
+            "name": "thecodingmachine/safe",
+            "version": "v2.4.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/thecodingmachine/safe.git",
+                "reference": "e788f3d09dcd36f806350aedb77eac348fafadd3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/thecodingmachine/safe/zipball/e788f3d09dcd36f806350aedb77eac348fafadd3",
+                "reference": "e788f3d09dcd36f806350aedb77eac348fafadd3",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^8.0"
+            },
+            "require-dev": {
+                "phpstan/phpstan": "^1.5",
+                "phpunit/phpunit": "^9.5",
+                "squizlabs/php_codesniffer": "^3.2",
+                "thecodingmachine/phpstan-strict-rules": "^1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.2.x-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "deprecated/apc.php",
+                    "deprecated/array.php",
+                    "deprecated/datetime.php",
+                    "deprecated/libevent.php",
+                    "deprecated/misc.php",
+                    "deprecated/password.php",
+                    "deprecated/mssql.php",
+                    "deprecated/stats.php",
+                    "deprecated/strings.php",
+                    "lib/special_cases.php",
+                    "deprecated/mysqli.php",
+                    "generated/apache.php",
+                    "generated/apcu.php",
+                    "generated/array.php",
+                    "generated/bzip2.php",
+                    "generated/calendar.php",
+                    "generated/classobj.php",
+                    "generated/com.php",
+                    "generated/cubrid.php",
+                    "generated/curl.php",
+                    "generated/datetime.php",
+                    "generated/dir.php",
+                    "generated/eio.php",
+                    "generated/errorfunc.php",
+                    "generated/exec.php",
+                    "generated/fileinfo.php",
+                    "generated/filesystem.php",
+                    "generated/filter.php",
+                    "generated/fpm.php",
+                    "generated/ftp.php",
+                    "generated/funchand.php",
+                    "generated/gettext.php",
+                    "generated/gmp.php",
+                    "generated/gnupg.php",
+                    "generated/hash.php",
+                    "generated/ibase.php",
+                    "generated/ibmDb2.php",
+                    "generated/iconv.php",
+                    "generated/image.php",
+                    "generated/imap.php",
+                    "generated/info.php",
+                    "generated/inotify.php",
+                    "generated/json.php",
+                    "generated/ldap.php",
+                    "generated/libxml.php",
+                    "generated/lzf.php",
+                    "generated/mailparse.php",
+                    "generated/mbstring.php",
+                    "generated/misc.php",
+                    "generated/mysql.php",
+                    "generated/network.php",
+                    "generated/oci8.php",
+                    "generated/opcache.php",
+                    "generated/openssl.php",
+                    "generated/outcontrol.php",
+                    "generated/pcntl.php",
+                    "generated/pcre.php",
+                    "generated/pgsql.php",
+                    "generated/posix.php",
+                    "generated/ps.php",
+                    "generated/pspell.php",
+                    "generated/readline.php",
+                    "generated/rpminfo.php",
+                    "generated/rrd.php",
+                    "generated/sem.php",
+                    "generated/session.php",
+                    "generated/shmop.php",
+                    "generated/sockets.php",
+                    "generated/sodium.php",
+                    "generated/solr.php",
+                    "generated/spl.php",
+                    "generated/sqlsrv.php",
+                    "generated/ssdeep.php",
+                    "generated/ssh2.php",
+                    "generated/stream.php",
+                    "generated/strings.php",
+                    "generated/swoole.php",
+                    "generated/uodbc.php",
+                    "generated/uopz.php",
+                    "generated/url.php",
+                    "generated/var.php",
+                    "generated/xdiff.php",
+                    "generated/xml.php",
+                    "generated/xmlrpc.php",
+                    "generated/yaml.php",
+                    "generated/yaz.php",
+                    "generated/zip.php",
+                    "generated/zlib.php"
+                ],
+                "classmap": [
+                    "lib/DateTime.php",
+                    "lib/DateTimeImmutable.php",
+                    "lib/Exceptions/",
+                    "deprecated/Exceptions/",
+                    "generated/Exceptions/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHP core functions that throw exceptions instead of returning FALSE on error",
+            "support": {
+                "issues": "https://github.com/thecodingmachine/safe/issues",
+                "source": "https://github.com/thecodingmachine/safe/tree/v2.4.0"
+            },
+            "time": "2022-10-07T14:02:17+00:00"
+        },
         {
             "name": "theseer/tokenizer",
             "version": "1.2.1",
diff --git a/infection.json b/infection.json
new file mode 100644
index 00000000..98476cbd
--- /dev/null
+++ b/infection.json
@@ -0,0 +1,17 @@
+{
+  "ignoreMsiWithNoMutations": true,
+  "logs": {
+    "text": ".build/infection/infection-log.txt"
+  },
+  "minCoveredMsi": 100,
+  "minMsi": 100,
+  "phpUnit": {
+    "configDir": "test\/Unit"
+  },
+  "source": {
+    "directories": [
+      "src"
+    ]
+  },
+  "timeout": 10
+}
diff --git a/psalm.xml b/psalm.xml
index 12df516b..adb7fb42 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -17,6 +17,7 @@
     <projectFiles>
         <directory name="src/" />
         <directory name="test/" />
+        <file name="rector.php" />
         <ignoreFiles>
             <directory name="vendor/" />
         </ignoreFiles>
diff --git a/rector.php b/rector.php
new file mode 100644
index 00000000..3bbb612c
--- /dev/null
+++ b/rector.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * Copyright (c) 2019-2023 Andreas Möller
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE.md file that was distributed with this source code.
+ *
+ * @see https://github.com/ergebnis/php-cs-fixer-config
+ */
+
+use Rector\Config;
+use Rector\Core;
+
+return static function (Config\RectorConfig $rectorConfig): void {
+    $rectorConfig->cacheDirectory(__DIR__ . '/.build/rector/');
+
+    $rectorConfig->import(__DIR__ . '/vendor/fakerphp/faker/rector-migrate.php');
+
+    $rectorConfig->paths([
+        __DIR__ . '/src/',
+        __DIR__ . '/test/',
+    ]);
+
+    $rectorConfig->phpVersion(Core\ValueObject\PhpVersion::PHP_80);
+};