YITH WooCommerce Membership Premium 2.20.0

* New - options to include/exclude members of specific plans in Cart Rules of YITH WooCommerce Dynamic Pricing and Discount 1.5.3
* Fix - override Multi Vendor options in combination with Frontend Manager
* Update - plugin framework

* New - search for membership by user fields
* Update - plugin framework
* Dev - added membership object in emails

* New - support to WooCommerce 3.6
* New - support to YITH Mailchimp 2.1.1: unsubscribe email when the membership expires or is cancelled
* Tweak - fixed notices for membership emails
* Update - language files
* Update - plugin framework