Add mixed as parameter type, add plan to change return types to mixed… #147

	name: PHPStan

	on:
	push:
	pull_request:

	jobs:

	tests:
	name: Run PHPStan with PHP ${{ matrix.php }}
	runs-on: ubuntu-latest

	strategy:
	fail-fast: false
	matrix:
	operating-system: ['ubuntu-latest']
	php: ['8.3']

	steps:
	- name: Checkout
	uses: actions/checkout@v3
	with:
	fetch-depth: 2

	- name: Setup PHP with composer and extensions
	uses: shivammathur/setup-php@v2 #https://github.com/shivammathur/setup-php
	with:
	php-version: ${{ matrix.php }}
	coverage: xdebug
	tools: none

	- name: Install Composer dependencies
	uses: "ramsey/composer-install@v2"

	- name: Run PHPStan
	run: composer run phpstan

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