Merge branch 'release/4.2.9'

* release/4.2.9:
  updates the changelog
  typecast the referer url to avoid errors on null

changelog.md

@@ -2,6 +2,11 @@
 
 ## [Unreleased](https://github.com/cnvs/canvas/compare/master...develop)
 
+## [4.2.9](https://github.com/cnvs/canvas/compare/v4.2.8...v4.2.9) (September 20, 2019)
+
+## Fixed
+- Patch for null referer URLs being passed in the view listener ([76e5fd6](https://github.com/cnvs/canvas/commit/76e5fd6aca480cda2455a195001babecf9e76b37))
+
 ## [4.2.8](https://github.com/cnvs/canvas/compare/v4.2.7...v4.2.8) (September 17, 2019)
 
 ## Added

src/Listeners/StoreViewData.php

@@ -20,7 +20,7 @@ public function handle(PostViewed $event)
                 'post_id' => $event->post->id,
                 'ip'      => request()->getClientIp(),
                 'agent'   => request()->header('user_agent'),
-                'referer' => $this->validUrl(request()->header('referer')),
+                'referer' => $this->validUrl((string) request()->header('referer')),
             ];
 
             $event->post->views()->create($view_data);