Bulk Edit Products, Prices & Attributes for Woocommerce 2.1.3

* Made compatible with WordPress 6.5
* Made compatible with WooCommerce 8.9

* Made compatible with WordPress 6.4.3
* Made compatible with WooCommerce 8.5
* Made compatible to edit/update fields for all WooCommerce product types
* An option to change the product type to an external

Bug fixes
* Fixed issue with Product image on PREVIEW page.

* Tested with WooCommerce 7.0.
* An option to filter products by custom attribute values.
* Added option to schedule sale price in bulk.