Upgrade to 3.8.0

kirby/src/Cms/Collections.php

@@ -2,6 +2,7 @@
 
 namespace Kirby\Cms;
 
+use Closure;
 use Kirby\Exception\NotFoundException;
 use Kirby\Filesystem\F;
 use Kirby\Toolkit\Controller;
@@ -101,7 +102,7 @@ class Collections
 		try {
 			$this->load($name);
 			return true;
-		} catch (NotFoundException $e) {
+		} catch (NotFoundException) {
 			return false;
 		}
 	}
@@ -124,7 +125,7 @@ class Collections
 		if (is_file($file) === true) {
 			$collection = F::load($file);
 
-			if (is_a($collection, 'Closure')) {
+			if ($collection instanceof Closure) {
 				return $collection;
 			}
 		}