Polylang Pro 3.6.5

* Pro: Fix posts sharing the same slug displayed on the same page
* Fix: Don't use a javascript localized string removed in WP 5.5 #568
* Fix fatal error in site health when no language is defined #563
* Fix various issues with Yoast SEO 14.x #65, #503, #505
* Fix fatal error with MU Domain Mapping when saving domains in Polylang settings #569

* Pro: Fix fatal error with WP 4.9
* Fix pll_the_languages() with 'raw' option returning html flag instead of flag url #558
* Fix compatibility with Duplicate Posts not correcly loaded #557
* Fix custom flag size in admin bar language switcher #559
* Fix tag clouds mixed in the classic editor #561

* Pro: Add a language switcher block
* Pro: Add compatibility with block image edition introduced in WP 5.5
* Pro: Fix our private taxonomies being displayed in the ACF field group rules.
* Pro: Fix incorrect flags loaded from the block editor
* Pro: Fix SSO causing a wrong redirect when using subdomains (introduced in 2.7.4)
* Pro: Fix a performance issue on the plugins list
* Pro: Fix option to automatically duplicate media in all languages when uploading a new file not honored in block image
* Use composer for autoload and Polylang Pro dependency on Polylang
* Display a flag for each post in the posts list tables (same for terms). #515
* Add test for the homepage translations to Site Health
* Add debug information to Site Health
* Add compatibility with the sitemaps introduced in WP 5.5 #451
* Always filter WP_Query by the current language
* Support wildcards in "admin-texts" parent keys in wpml-config.xml
* Fix sticky posts showed for all languages when the admin language filter is active #469
* Fix a performance issue on the pages list
* Fix dependency to jQuery Migrate removed from WP 5.5 #539
* Fix: output secure cookie when using a cache plugin and ssl #542
* Fix the possibility to create 2 terms with the same name in the same language, without specifying the second slug.
* Fix sticky posts appearing 2 times in WP 5.5