YITH Custom Thank You Page for Woocommerce Premium 3.7.0

* New: support for WooCommerce 4.4
* New: support for WoordPress 5.5
* Update: Plugin Framework
* Update: Plugin Upgrade
* Fix: pdf preview
* Fix: rule_type check in remove_rule function
* Fix: deprecated function in template

* New: support for WooCommerce 4.3
* New: added Rules Tab in plugin settings panel
* New: added Section Title input text field in Social Box Tab
* New: added Section Title input text field in UpSells Tab
* Update: Plugin Framework
* Update: Language Files
* Fix: issue with product categories
* Fix: issue with product variation parent thank you page
* Fix: General Page setting with WPML
* Fix: notice on PDF button as shortcode when load page not as thank you page
* Fix: double check on social box template to avoid fatal error

* New: support for WooCommerce 4.2
* Update: Plugin Framework
* Update: Language Files
* Fix: fixed total column issue in order template
* Fix: fixed issue setting Thank You Page for Single Products
* Fix: fixed facebook sharing product url