WooCommerce Dynamic Pricing & Discounts 2.4.6

* Fix - Struck-through regular price no longer displayed after 2.3.6
* Fix - Empty sale price incorrectly converted to zero price
* Fix - Base price not set to regular price when it should under specific conditions
* Fix - WooCommerce product sale price ignored under specific conditions

* Fix - In some cases using "buy x get y" does not discount the cheapest product
* Fix - Fixed amount cart discount is not limited by cart subtotal
* Fix - Cart discount division by zero warning when cart subtotal is zero
* Fix - Cart discount id is displayed in order view instead of cart discount title
* Fix - Malformed card discount names in admin order view if more than one is present
* Tweak - All cart adjustments now saved to orders for future reference
* Tweak - Added limited support for product feed plugins (extra step is needed to enable)
* Tweak - Other minor bug fixes and improvements
* Dev - New function rp_wcdpd_get_product_pricing_rules_applicable_to_product
* Dev - New function rp_wcdpd_get_product_pricing_rules_applicable_to_cart_item
* Dev - New function rp_wcdpd_get_cart_discount_rules_applicable_to_cart
* Dev - New function rp_wcdpd_get_checkout_fee_rules_applicable_to_cart

* Tweak - Product price caching subsystem performance improvements
* Tweak - Other minor bug fixes and improvements
* Dev - Changed administrative capability from manage_woocommerce to manage_rp_wcdpd