Polylang Pro 3.6.5

* Add Kannada to the predefined languages list
* Yoast SEO: Fix primary product cat not copied or synchronized
* WPMU Domain Mapping: Fix incorrect domain used for the theme
* Fix style-rtl.css not loaded when the language is set from the content #356
* Fix Jetpack featured pages not working. Props Anis Ladram. #357
* Fix Call to undefined function wp_generate_attachment_metadata()

* Add de_AT and pt_AO to the predefined languages list
* Pro: Add filter pll_translate_blocks
* Pro: fix PHP notice when the queried post type has been modified to an array
* Pro: fix PHP warning when combined with The Event Calendar and Page builder by SiteOrigin

* Pro: Fix translated slugs not accepting forward slashes
* Pro: Fix fatal error with ACF Pro 5.7.11
* Fix parent categories incorrectly synchronized #327