Do not add stopwatch if already added

Author: Nyholm

CHANGELOG.md

@@ -3,6 +3,10 @@
 
 ## UNRELEASED
 
+### Added
+
+- The stopwatch plugin in included by default when using profiling. 
+
 ### Changed
 
 - All clients are registered with the PluginClient. (even in production)

DependencyInjection/HttplugExtension.php

@@ -217,8 +217,10 @@ private function configureClient(ContainerBuilder $container, $name, array $argu
         $pluginClientOptions = [];
 
         if ($profiling) {
-            // Add the stopwatch plugin
-            array_unshift($arguments['plugins'], 'httplug.plugin.stopwatch');
+            if (!in_array('httplug.plugin.stopwatch', $arguments['plugins'])) {
+                // Add the stopwatch plugin
+                array_unshift($arguments['plugins'], 'httplug.plugin.stopwatch');
+            }
 
             // Tell the plugin journal what plugins we used
             $container