Add return types to fix deprecation #46

	name: test-unit
	on:
	push:
	branches:
	- master
	- main
	pull_request:
	jobs:
	run:
	runs-on: ${{ matrix.operating-system }}
	strategy:
	matrix:
	operating-system: [ 'ubuntu-latest' ]
	php-versions: [ '5.6', '7.0', '7.1', '7.2', '7.3', '8.0', '8.1' ]
	steps:
	- name: Checkout
	uses: actions/checkout@v2

	- name: Cache vendor
	uses: actions/cache@v2
	with:
	path: \|
	vendor
	key: deps-${{ hashFiles('composer.lock') }}

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php-versions }}
	ini-values: post_max_size=256M, max_execution_time=180
	tools: composer

	- name: Populate vendor
	run: '[ -e vendor ] \|\| composer install'

	- name: Run Tests
	run: make deps test

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