V2.5 (Minecraft 1.9!):

Quick Update to CraftBukkit 1.9! Removing Craft Item Dependencies in ItemJoin v2.6!
This update was rushed so if you guys find any bugs PLEASE REPORT THEM!

Added:

• Language.yml, edit messages!
  
• Support for CraftBukkit 1.9!
  

Fixed:

• Another attempt at fixing Skull_Items lag. Its not complete but better.
  

Have any ideas or requests that you would like to see in ItemJoin's future? Please submit a feature request!

Skull Items still cause a bit of lag.