YITH WooCommerce Questions And Answers Premium 1.34.0

* New: support for WooCommerce 4.0
* New: support for WordPress 5.4
* New: added plugin shortcodes with Elementor PRO
* Tweak: now, the answers paging option also displays the selected number of question in the main Q&A view, and the answers are in the correct order
* Update: plugin-fw
* Fix: customer answer email when the answer is made from backend
* Dev: all strings are now escaped
* Dev: new filter 'yith_ywqa_questions_tab_priority'

* New: support for WooCommerce 3.9
* Fix: fixed the redirect to the product page when user in in login page and go back
* Update: Italian language
* Update: Spanish language
* Update: .pot file

* New: support for WordPress 5.3
* New: support for WooCommerce 3.8
* Tweak: added a new option to anonymize the Q&A dates
* Update: plugin framework
* Update: Dutch language
* Fix: now the answer email is sent when the answer is approved
* Fix: fixed the new metabox to be displayed in all the post pages, now are only displayed in the q&a post
* Dev: don't notify the answer to the question author if the answer needs to be approved