Update code standards to PHP 7.1+ (#75)

Author: TavoNiievez

composer.json

@@ -1,13 +1,17 @@
 {
-    "name":"codeception/module-symfony",
-    "description":"Codeception module for Symfony framework",
-    "keywords":["codeception", "symfony"],
-    "homepage":"https://codeception.com/",
-    "type":"library",
-    "license":"MIT",
-    "authors":[
+    "name": "codeception/module-symfony",
+    "description": "Codeception module for Symfony framework",
+    "keywords": ["codeception", "symfony"],
+    "homepage": "https://codeception.com/",
+    "type": "library",
+    "license": "MIT",
+    "authors": [
         {
-            "name":"Michael Bodnarchuk"
+            "name": "Michael Bodnarchuk"
+        },
+        {
+            "name": "Gustavo Nieves",
+            "homepage": "https://medium.com/@ganieves"
         }
     ],
     "minimum-stability": "RC",
@@ -25,7 +29,7 @@
         "codeception/module-sequence": "^1.0",
         "vlucas/phpdotenv": "^3.6 | ^4.1 | ^5.2"
     },
-    "autoload":{
+    "autoload": {
         "classmap": ["src/"]
     },
     "config": {

src/Codeception/Lib/Connector/Symfony.php

@@ -10,6 +10,9 @@
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\HttpKernelBrowser;
 use Symfony\Component\HttpKernel\Kernel;
+use function array_keys;
+use function class_alias;
+use function codecept_debug;
 
 if (Kernel::VERSION_ID < 40300) {
     class_alias('Symfony\Component\HttpKernel\Client', 'Symfony\Component\HttpKernel\HttpKernelBrowser');
@@ -77,7 +80,7 @@ protected function doRequest($request): Response
      * are updated from service container before kernel shutdown
      * and injected into newly initialized container after kernel boot.
      */
-    public function rebootKernel()
+    public function rebootKernel(): void
     {
         if ($this->container) {
             foreach (array_keys($this->persistentServices) as $serviceName) {