Media File Renamer Pro 6.0.1

* Fix: Undo All wasn't working on WordPress install with modified DB prefixes.
* Fix: Works with Plain Permalinks.
* Update: More natural feel for the field in the Media Library.

* Fix: Use MutationObserver to make sure the Renamer Field attach itself to dynamic Media Librairies.
* Fix: Fixed a notice related to WP 5.5.
* Update: Better handling of emoticons.

* Info: Brand new UI! Made everything much clearer.
* Fix: Method was not always taken in account.