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A bit late to the party, however this update finally brings 1.20.6 and 1.21 support to the plugins!
As always, and especially now as 1.20.6 changed a lot of things, please join the discord and let us know if there are any issues!
With the previous updates, a lot of internal changes have been made.
This update removes a small field used for reflection which is no longer used by the API.
This was caused by a certain method not existing on 1.8.8 during startup. This should now be fixed.
This update fixes a bug with custom packets being sent in 1.20
This update brings about two important bugfixes in the internal core library:

A simple plugin for creating command aliases!