WooCommerce Product Reviews Pro 1.20.0

* Tweak - Add an option to allow or disallow attachments on reviews and questions
* Fix - Trashed contributions no longer prevent new contributions on the same product
* Fix - Mobile responsive fixes for login modal
* Fix - Anonymous contributions can now be correctly added when allowed by comment settings
* Fix - Fix issue with badges not appearing correctly
* Fix - Fix issue with multiple HTML element IDs being found on the same page
* Dev - Add action hook that fires inside contribution forms

* Feature - Show product contributions to public only after an optional minimum threshold is met
* Feature - Add an option to automatically change the publication status of contributions flagged as inappropriate by someone
* Feature - Get more flagging data and resolve customer flagging reports from the review edit screen in admin
* Feature - Optionally notify the admin by email whenever a contribution is flagged for removal
* Feature - Add WooCommerce Product Vendors integration
* Fix - Remove hardcoded HTTP for contribution rating & vote links

* Misc - Add support for WooCommerce 3.3
* Misc - Remove support for WooCommerce 2.5