Include the taxonomy in the unique callback ...

This fixes an issue when you have two terms with the same slug in different taxonomies, only one will be returned when querying.

Author: jasonvarga

src/Stache/Query/TermQueryBuilder.php

@@ -61,7 +61,7 @@ protected function getFilteredKeys()
             : $this->getKeysFromTaxonomiesWithWheres($taxonomies, $this->wheres);
 
         return $keys->unique(function ($key) {
-            return explode('::', $key)[2];
+            return collect(explode('::', $key))->forget(1)->join('::');
         });
     }