So in 1.3 version I added mob's statistics to config.yml file, and now you can freely change them to your liking.
It looks simply like this:

Mob:

Everything is further described within the config file, so read the comments.
Also, I've briefly tested my plugin with Paper and it seems it should be working with it aswell without any problems/errors.

Note: If you were using previous versions, please remember to delete your previous config.yml,
so that the new updated version can appear.