small changes #815

	name: build
	'on':
	- push
	- pull_request
	jobs:
	build:
	strategy:
	matrix:
	operating-system:
	- ubuntu-latest
	php-versions:
	- '5.4'
	- '5.5'
	- '5.6'
	- '7.0'
	- '7.1'
	- '7.2'
	- '7.3'
	- '7.4'
	- '8.0'
	- '8.1'
	- '8.2'
	runs-on: '${{ matrix.operating-system }}'
	steps:
	-
	name: checkout
	uses: actions/checkout@v2
	-
	name: setup php
	uses: shivammathur/setup-php@v2
	with:
	php-version: '${{ matrix.php-versions }}'
	extensions: 'mbstring, simplexml, dom, fileinfo, openssl, curl, gd, pdo_sqlite, pdo_mysql, pdo_pgsql, pdo_mssql'
	-
	name: get composer cache directory
	id: composer-cache
	run: >-
	echo "::set-output name=dir::$(composer config cache-files-dir)"
	-
	name: cache composer dependencies
	uses: actions/cache@v2
	with:
	path: '${{ steps.composer-cache.outputs.dir }}'
	key: >-
	${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
	restore-keys: '${{ runner.os }}-composer-'
	-
	name: install dependencies
	run: >-
	composer install --no-progress --prefer-dist --optimize-autoloader
	-
	name: test with phpunit 4.8.34
	run: 'php ./rakit test:core'

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