column format

examples/simple.php

@@ -9,6 +9,9 @@ $table = new ListJsonTable($json);
 
 //$table->columns([
 $table->columns([
+    "created_at" => [
+        "format" => "date:Y-m-d",
+    ],
     'status' => function ($cell) {
         return getStatusLabel()[$cell];
     },