The version of the library is equivalent to the version of UIkit in its composition.
Only the current version of the library is available for download.
The library has an API.
IMPORTANT! Versions for Joomla 3 and Jomla 4 differ in the location of the API files, as well as the need for external initialization of the API classes by the system plugin, as a result of which the versions are incompatible with each other: please take this into account when upgrading the Joomla site from version 3 to version 4.