Merge pull request #5 from GrahamCampbell/patch-1

Support Symfony 5

Author: dbu

composer.json

@@ -15,11 +15,11 @@
         "guzzlehttp/psr7": "^1.4",
         "php-http/client-common": "^2.0",
         "psr/log": "^1.0",
-        "symfony/filesystem": "^3.4|^4.0",
-        "symfony/options-resolver": "^3.4|^4.0"
+        "symfony/filesystem": "^3.4|^4.0|^5.0",
+        "symfony/options-resolver": "^3.4|^4.0|^5.0"
     },
     "require-dev": {
-        "symfony/phpunit-bridge": ">= 4.2",
+        "symfony/phpunit-bridge": "^4.2|^5.0",
         "friendsofphp/php-cs-fixer": "^2.14"
     },
     "autoload": {