The extension package has been rewritten according to the new canons of Joomla 4. This means that extensions should work seamlessly on Joomla 5 (released in the fall of 2023) and later on Joomla 6 (expected in 2025).
Change
Abandonment of jquery
Javascript code now does not require the use of the jQuery library.
Addition
PHP 8.1 compatibility
The functionality of extensions on PHP 8.1 has been tested. All noticed errors, warnings and notifications have been fixed.