Rename discussion.startUser

src/Api/Controller/CreateDiscussionController.php

@@ -31,7 +31,7 @@ class CreateDiscussionController extends AbstractCreateController
      */
     public $include = [
         'posts',
-        'startUser',
+        'user',
         'lastUser',
         'firstPost',
         'lastPost'

src/Api/Controller/ListDiscussionsController.php

@@ -30,7 +30,7 @@ class ListDiscussionsController extends AbstractListController
      * {@inheritdoc}
      */
     public $include = [
-        'startUser',
+        'user',
         'lastUser',
         'mostRelevantPost',
         'mostRelevantPost.user'

src/Api/Controller/ShowDiscussionController.php

@@ -52,7 +52,7 @@ class ShowDiscussionController extends AbstractShowController
      * {@inheritdoc}
      */
     public $optionalInclude = [
-        'startUser',
+        'user',
         'lastUser',
         'firstPost',
         'lastPost'

src/Api/Serializer/BasicDiscussionSerializer.php

@@ -44,7 +44,7 @@ class BasicDiscussionSerializer extends AbstractSerializer
     /**
      * @return \Tobscure\JsonApi\Relationship
      */
-    protected function startUser($discussion)
+    protected function user($discussion)
     {
         return $this->hasOne($discussion, BasicUserSerializer::class);
     }