In this version I added 1.17 compatibility with a tons of bugfixes that could've happen due to race conditions -> The result was that all players could've been kicked. In this update, everything should be fixed.
Furthermore a class named "NickScoreboard" has been added to give nicked names a scoreboard team without doing it yourself. It should've been compatibile with your current scoreboard plugin. If it isn't, create your NickScoreboard with a delayed task.
I removed 1.16.0 - 1.16.2 compatibility because it is annoying me for a developer to support every subversion instead of the latest version.
Means: NickAPI only support the latest subversion of a "big" version.

Please report your experience with this update on my Discord server: https://haoshoku.xyz/go/discord

Changelogs:
+ added 1.17 compatibility
+ added the class NickScoreboard
+ added a notification if a uuid is being used multiple times -> player gets their own uuid back if thats the case
* race conditions bugfixes (+ NPE)
- removed compatibility for 1.16.0 - 1.16.2