YITH WooCommerce Zoom Magnifier Premium 2.30.0

Update: updated plugin FW
Fix: fixed an issue on the page load

* Update: updated Italian translation
* Update: updated Dutch translation
* Update: updated .pot language file
* Fix: fixed missing string
* Fix: fixed an issue with the variations
* Dev: added filters to add compatibility with featured audio and video content plugin

* New: support to WordPress 5.0
* Update: plugin core to version 3.1.6