Version: 1.1.1
* Fix - Incorrect enqueued script and undefined data issue.
* Fix - Prevent Ajax response when no multipart enabled in the form.
* Feature - Form submission preview.
* Enhance - Drag and Drop fields between multipart.
* Fix - Drag new part just after creation distorts structure.
* Fix - Step jumping on next.
* Fix - PHP 8.0 Compatibility.