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✏️ Editing: 3.1.6.md

# Features
* Added debug information box to WPML >* Support page
* Administrator can add user role to display hidden languages
* Languages can have now apostrophes in their names
* New way to define WPML_TM_URL is now tolerant for different server settings
* Time of first activation of WPML plugin reduced to about 5% of previous results

# Fixes
* Added filtering stylesheet URI back
* Added filters to be applied when custom fields are duplicated
* Broken language switcher in custom post type archive pages was fixed
* constants ICL_DONT_LOAD_LANGUAGE_SELECTOR_CSS + ICL_DONT_LOAD_LANGUAGES_JS are respected now when JS and CSS files are loaded
* Enhanced filtering of home_url() function
* Fixed broken wp_query when querying not translatable Custom Post Type by its name: WPML was removing this name, which resulted with wrong list of posts
* Fixed compatibility with new version of NextGen Gallery plugin
* Fixed possible SQL injections
* Fixed string translation for multilevel arrays where content was indexed by numbers, it was not possible to translate elements on position zero
* Fixed warning in sitepress::get_inactive_content()
* Fixed widget previews
* Fixed wrong post count for Language Links
* Function 'get_post_type_archive_link' was not working with WPML, it is fixed now
* Function url_to_postid() is now filtered by WPML plugin to return correct post ID
* get_term_adjust_id cache fixed to work also if term is in multiple taxonomies
* icl_object_id works now for private posts
* Improved translation of hierarchical taxonomies
* Removed references to global $wp_query in query filtering functions
* Support for translate_object_id filter - this can be used in themes instead of the icl_object_id function
* Translated drafts are saved now with correct language information
* When was set root page, secondary loops displayed wrong results
* WordPress Multisite: when you switch between blogs, $sitepress->get_default_language() returned sometimes wrong language. It is fixed
* WP SEO plugin compatibility enhancements
* wp_query can have now more than one slug passed to category_name
* WPML is no longer removing backslashes from post content, when post it duplicated

MR SKB