Return self on `remove Manipulation` for concatenation #181

	name: run-tests

	on: [push, pull_request]

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: true
	matrix:
	os: [ubuntu-latest]
	php: [8.0, 8.1, 8.2]
	dependency-version: [prefer-lowest, prefer-stable]

	name: P${{ matrix.php }} - ${{ matrix.dependency-version }} - ${{ matrix.os }}

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- 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, fileinfo
	coverage: none

	- name: Setup Problem Matches
	run: \|
	echo "::add-matcher::${{ runner.tool_cache }}/php.json"
	echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"

	- name: Install dependencies
	run: composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction

	- name: Execute tests
	run: vendor/bin/pest

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