Being Transparent In future, support for any version that is not latest will be dropped.
This is because the internals of the plugin will be getting an adjustment to support different server versions (paper, fabric etc) and, to speed up iterations of features within the plugin and versioning updates.
From a development perspective, this means dropping a few dependencies - which will in turn reduce the size of the software and remove reliance on library updates to support new versions.
If you have any questions or would like to get involved please feel free to get in contact via the github link.