Merge pull request #38 from TomHAnderson/hotfix/id-criteria

Allow string filters for ids

src/Criteria/CriteriaFactory.php

@@ -193,7 +193,9 @@ public function get(
                 ];
             }
 
-            if ($graphQLType !== Type::string()) {
+            // According to GraphQL id types are represented as strings so
+            // include string fitlers with ids
+            if ($graphQLType !== Type::string() && $graphQLType !== Type::id()) {
                 continue;
             }