This update fixes yet another duplication bug which could be abused using mods, see #15. In order to fix it, when you open the gui the armor stand equipment is cleared now, and then reapplied when you close it. If you don't want this behaviour, e.g. when you run a small server with friends, you can disable this in the features section of the config.

Another thing I added is the implementation of the config option to replace the equipment items with the deactivated item when that feature is disabled. Somehow, I added the option but forgot to implement it...