The /items command can now be used to give another player a specified Item by simply adding the target players' name to the end of the command.
Syntax:
/items <itemname> <target name>

If you want to give the Item to yourself you can still just use:
/items <itemname>

This means you can now also enter the following command in the config to give an item upon a bosses death. (Example)
"items slimeboots <killer>" (gives the boss' killer the slimeboots)
This can be used in naturally spawned bosses aswell as respawning bosses. Sadly I was not able to make it work for the radius and @a.

If you should notice any bugs please tell me about them so I may fix them quickly