Fixed issue with the display item not showing on MC 1.11
Added new anti-dupe protection for the display item that fixes the flowing water dupe bug. Also this new anti-dupe protection may work with modded items.
If you have any issue, please report it on Github only!
Github issues tracker: https://github.com/KaiKikuchi/QuickShop/issues
You can find the latest changes log here: https://github.com/KaiKikuchi/QuickShop/commits/master