Add GitHub CI

.github/CONTRIBUTING.md

@@ -0,0 +1,55 @@
+# Contributing
+
+Contributions are **welcome** and will be fully **credited**.
+
+Please read and understand the contribution guide before creating an issue or pull request.
+
+## Etiquette
+
+This project is open source, and as such, the maintainers give their free time to build and maintain the source code
+held within. They make the code freely available in the hope that it will be of use to other developers. It would be
+extremely unfair for them to suffer abuse or anger for their hard work.
+
+Please be considerate towards maintainers when raising issues or presenting pull requests. Let's show the
+world that developers are civilized and selfless people.
+
+It's the duty of the maintainer to ensure that all submissions to the project are of sufficient
+quality to benefit the project. Many developers have different skillsets, strengths, and weaknesses. Respect the maintainer's decision, and do not be upset or abusive if your submission is not used.
+
+## Viability
+
+When requesting or submitting new features, first consider whether it might be useful to others. Open
+source projects are used by many developers, who may have entirely different needs to your own. Think about
+whether or not your feature is likely to be used by other users of the project.
+
+## Procedure
+
+Before filing an issue:
+
+- Attempt to replicate the problem, to ensure that it wasn't a coincidental incident.
+- Check to make sure your feature suggestion isn't already present within the project.
+- Check the pull requests tab to ensure that the bug doesn't have a fix in progress.
+- Check the pull requests tab to ensure that the feature isn't already in progress.
+
+Before submitting a pull request:
+
+- Check the codebase to ensure that your feature doesn't already exist.
+- Check the pull requests to ensure that another person hasn't already submitted the feature or fix.
+
+## Requirements
+
+If the project maintainer has any additional requirements, you will find them listed here.
+
+- **[PSR-2 Coding Standard](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md)** - The easiest way to apply the conventions is to install [PHP Code Sniffer](https://pear.php.net/package/PHP_CodeSniffer).
+
+- **Add tests!** - Your patch won't be accepted if it doesn't have tests.
+
+- **Document any change in behaviour** - Make sure the `README.md` and any other relevant documentation are kept up-to-date.
+
+- **Consider our release cycle** - We try to follow [SemVer v2.0.0](https://semver.org/). Randomly breaking public APIs is not an option.
+
+- **One pull request per feature** - If you want to do more than one thing, send multiple pull requests.
+
+- **Send coherent history** - Make sure each individual commit in your pull request is meaningful. If you had to make multiple intermediate commits while developing, please [squash them](https://www.git-scm.com/book/en/v2/Git-Tools-Rewriting-History#Changing-Multiple-Commit-Messages) before submitting.
+
+**Happy coding**!

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: spatie

.github/SECURITY.md

@@ -0,0 +1,3 @@
+# Security Policy
+
+If you discover any security related issues, please email [email protected] instead of using the issue tracker.

.github/workflows/php-cs-fixer.yml

@@ -0,0 +1,23 @@
+name: Check & fix styling
+
+on: [push]
+
+jobs:
+  php-cs-fixer:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.head_ref }}
+
+      - name: Run PHP CS Fixer
+        uses: docker://oskarstark/php-cs-fixer-ga
+        with:
+          args: --config=.php_cs.dist --allow-risky=yes
+
+      - name: Commit changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Fix styling

.github/workflows/run-tests.yml

@@ -0,0 +1,39 @@
+name: Tests
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: true
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+        php: [7.4, 8.0]
+        dependency-version: [prefer-lowest, prefer-stable]
+
+    name: P${{ matrix.php }} - ${{ matrix.dependency-version }} - ${{ matrix.os }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Cache dependencies
+        uses: actions/cache@v2
+        with:
+          path: ~/.composer/cache/files
+          key: dependencies-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite, bcmath, soap, intl, gd, exif, iconv, imagick
+          coverage: none
+
+      - name: Install dependencies
+        run: |
+          composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction --ignore-platform-reqs
+
+      - name: Execute tests
+        run: vendor/bin/phpunit

.php_cs.dist

@@ -0,0 +1,43 @@
+<?php
+
+$finder = Symfony\Component\Finder\Finder::create()
+    ->notPath('bootstrap/*')
+    ->notPath('storage/*')
+    ->notPath('resources/view/mail/*')
+    ->in([
+        __DIR__ . '/src',
+        __DIR__ . '/tests',
+    ])
+    ->name('*.php')
+    ->notName('*.blade.php')
+    ->ignoreDotFiles(true)
+    ->ignoreVCS(true);
+
+return PhpCsFixer\Config::create()
+    ->setRules([
+        '@PSR2' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'ordered_imports' => ['sortAlgorithm' => 'alpha'],
+        'no_unused_imports' => true,
+        'not_operator_with_successor_space' => true,
+        'trailing_comma_in_multiline_array' => true,
+        'phpdoc_scalar' => true,
+        'unary_operator_spaces' => true,
+        'binary_operator_spaces' => true,
+        'blank_line_before_statement' => [
+            'statements' => ['break', 'continue', 'declare', 'return', 'throw', 'try'],
+        ],
+        'phpdoc_single_line_var_spacing' => true,
+        'phpdoc_var_without_name' => true,
+        'class_attributes_separation' => [
+            'elements' => [
+                'method',
+            ],
+        ],
+        'method_argument_space' => [
+            'on_multiline' => 'ensure_fully_multiline',
+            'keep_multiple_spaces_after_comma' => true,
+        ],
+        'single_trait_insert_per_statement' => true,
+    ])
+    ->setFinder($finder);