Rename notification.sender

src/Api/Controller/ListNotificationsController.php

@@ -30,7 +30,7 @@ class ListNotificationsController extends AbstractListController
      * {@inheritdoc}
      */
     public $include = [
-        'sender',
+        'fromUser',
         'subject',
         'subject.discussion'
     ];

src/Api/Serializer/NotificationSerializer.php

@@ -65,7 +65,7 @@ class NotificationSerializer extends AbstractSerializer
      * @param Notification $notification
      * @return \Tobscure\JsonApi\Relationship
      */
-    protected function sender($notification)
+    protected function fromUser($notification)
     {
         return $this->hasOne($notification, BasicUserSerializer::class);
     }