YITH WooCommerce Auctions Premium 4.8.0

Update: Plugin Framework
Tweak: Prevent send emails when auction trashs
Dev : Filter yith_wcact_render_product_columns_dateinic
Dev : Filter yith_wcact_render_product_columns_dateclose

* New : Send notification to customer who lost auction
* New : Daily cronjob to resend failed emails to winners
* Tweak : Improve slow queries
* Update : Dutch language
* Fix : Time format on related product section
* Dev : Filter yith_wcact_check_email_is_send
* Dev : Filter yith_wcact_congratulation_message
* Dev : Filter yith_wcact_my_account_congratulation_message
* Dev : Filter yith_wcact_product_exceeded_reserve_price_message
* Dev : Filter yith_wcact_product_has_reserve_price_message
* Dev : Filter yith_wcact_product_does_not_have_a_reserve_price_message
* Dev : Action yith_wcact_auction_status_my_account_closed
* Dev : Action yith_wcact_auction_status_my_account_started

* New: Admin option to resend failed emails to winners
* New: Daily cronjob to resend failed emails to winners
* Update: Italian language
* Update: Spanish language
* Tweak: Possibility to change recipient email
* Dev : Filter yith_wcact_check_email_is_send