YITH Woocommerce Dynamic Pricing and Discounts Premium 4.15.0

* Update: Plugin Core 3.2.1
* Fix: Fixed some issue for rule execution
* Dev: Added yith_ywdpd_cart_rules_discount_value_row action

New: Support to WooCommerce 3.6.0 RC1
New: Feature to exclude some products, categories or tags from the discount calculation
Tweak: Added transient for dynamic discount rules
Update: Language files
Update: Plugin Core 3.1.28
Fix: Fixed the taxonomy check for variation products

Update: Language files
Update: Plugin Core 3.1.23
Fix: YITH WooCommerce Brands Add-on Premium Integration
Fix: Duplicate rule issue with key and ID
Fix: Table rules hidden for variations
Fix: Issue for WooCommerce Composite Products
Fix: Compatibility issue with PHP 7.3