Problem with doctrine (#86)

Setting that unsigned:true makes that doctrine always try to change the schema (also when no changes it's performed). Seems related to: https://stackoverflow.com/questions/31339328/symfony2-doctrineschemaupdate-keeps-updating

src/DoctrineAuditBundle/Helper/AuditHelper.php

@@ -285,7 +285,6 @@ public function getAuditTableColumns(): array
                 'options' => [
                     'default' => null,
                     'notnull' => false,
-                    'unsigned' => true,
                 ],
             ],
             'blame_user' => [