Added:

• Support for AuthMe Note: You will need to delete your v5 config.yml and set AuthMe to true if you use AuthMe!
• Updated to CraftBukkit/Spigot 1.11.2
• Major support for Minecraft v1.7. Working flawlessly on v1.7 but with a few features disabled, more will come in ItemJoin v4.0. (Surprised nobody told me sooner about the v1.7 bugs, these date back to ItemJoin v2.0 Wtf?!).

Fixed:

• CPU usage is significantly reduced, meaning... less lag!
• Crashing server on items running certain commands.
• Bug that would allow you to move items using your hot bar.
  
• Creative mode allowing moving and accidentally duplicating the item that shouldn't be moved. (Client side issue - fixed by just closing the players inventory if they are creative and click an item that shouldn't be moved.)
• Creative Mode bug; they could double click an item that's not suppose to be moved and creating a second one. (Duplication Glitch)
• count-lock issue where items would not be added back to the players inventory. Just had to add a short delay.
• count-lock issue with fireworks, you can now have infinite fireworks.
• Bug with clear ItemJoin items on versions before Minecraft 1.9 (Offhand slot issue).
• Rest of a few minor bug fixes.

Thank you guys for being patient, this v3.9 update had a lot of bugs I needed to work out, as well as I am 1/3rd of the way through programming the v4.0 that will revolutionize how ItemJoin works and reduce ItemJoin's lag close to zero!

Please see the Documentations page if you need any help with these new updates!
Have any ideas or requests that you would like to see in ItemJoin's future? Please submit a feature request.