Update to newer versions (1.21.1+)

[DocsGalactic]

Is your feature request related to a problem? Please describe. I've used this API alongside the NickNamer plugin with my server for a very long time and now it is breaking causing the nametag to not appear above a players head.

Describe the solution you'd like I'd love to have the plugin updated or be compatible with the newer versions of Minecraft as this feature was a fun and unique thing I loved about my server.

Describe alternatives you've considered N/A

Additional context Nothing to add but thank you for making this plugin in the first place, when I have been able to use it its been amazing and I cannot wait until these issues are fixed/an update comes.