I have one question and one suggestion:
Will you backport new features to 1.19.2?
And it would be so great if it was possible to import npcs that are saved in the config via command. I am making a modpack with a dungeon and this would be perfect.
Thanks a lot in advance

At the moment I starting implementing a feature in 1.18.2 and porting it to 1.19, 1.19.2, 1.19.3, 1.19.4, 1.20 and 1.20.1.

I can't promising that I will support all versions in the feature, but the currently mostly used versions are 1.18.2, 1.19.2 and 1.20.1 so I will try my best to support them as long my time allows it.

For your request, there is already a command implement for importing npc over a command.
See: https://github.com/MarkusBordihn/BOs-Easy-NPC/wiki/Import#commands

Let me know if you run into any issues with this implementation, because my use case is very limited compare to a complex modpack. Thanks.