YITH WooCommerce Membership Premium 2.20.0

New - Persian translation (thank to Sadra)
New - Dutch translation
Fix - do_shortcode in alternative content for products
Fix - plan metabox saving
Fix - links
Tweak - prevent notice in menu
Dev - added yith_wcmbs_admin_profile_show_membership_count filter
Dev - added yith_wcmbs_products_manager_add_products_in_plan_only_downloadable_check filter
Dev - added yith_wcmbs_membership_notify filter
Dev - added yith_wcmbs_membership_max_days_number_to_send_expiring_email filter

New - support to WooCommerce 3.3
New - default Alternative Content
Update - Plugin Framework
Fix - notice in Membership Welcome email
Fix - tip-tip css style
Fix - time offset in Membership History
Fix - add to cart validation issue
Fix - required registration for membership products issue
Tweak - prevent theme issues
Dev - added yith_wcmbs_get_alternative_content function
Dev - added yith_wcmbs_get_alternative_content filter
Dev - added yith_wcmbs_membership_history_shortcode_membership_plans_status filter
Dev - added yith_wcmbs_admin_profile_membership_columns_membership_plans_args filter
Dev - added yith_wcmbs_admin_profile_membership_columns_membership_plans_status filter
Dev - added yith_wcmbs_membership_history_shortcode_membership_plans_args filter
Dev - added yith_wcmbs_validate_product_add_to_cart_needs_membership_error_message filter

• New - translate plan title with WPML
• Tweak - added gettext to print membership note to make it translatable through WPML String Translations
• Update - language file
• Fix - integration with YITH WooCommerce Dynamic Pricing and Discounts 1.4.2
• Fix - Linked Plans field issue
• Fix - WPML issue
• Dev - added yith_wcmbs_membership_get_plan_title filter
• Dev - fixed yith_wcmbs_get_restricted_items_in_plan filter issue