* New optional parameter $extracontent for print_collapsible_region_start(). This allows developers to add interactive HTML elements
(e.g. a help icon) after the collapsible region's toggle link.
* Final deprecation i_dock_block() in behat_deprecated.php
+* Final deprecation of get_courses_page. Function has been removed and core_course_category::get_courses() should be
+ used instead.
+* New encryption API in \core\encryption allows secure encryption and decryption of data. By
+ default the key is stored in moodledata but admins can configure a different, more secure
+ location in config.php if required. To get the best possible security for this feature, we
+ recommend enabling the Sodium PHP extension.
+ * Behat timeout constants behat_base::TIMEOUT, EXTENDED_TIMEOUT, and REDUCED_TIMEOUT, which were deprecated in 3.7, have been removed.
=== 3.10 ===
* PHPUnit has been upgraded to 8.5. That comes with a few changes:
