existing potion effects will continue their effects.
In the previous version, some potion effects with time limit were reset in some cases. This version will continue time counting.
updated VKLib for a better support for PlotSquared and Plotz.
added a fix for enchanting an item for a player whose name is a number.
thanks to ThePurpleHoser for this fix.
refactored the AreaUtil. This should resolve various issues existed with AreaUtil (such as ConcurrentModificationException and NPE).
added enchantment check during the inventory interaction.
fixed invalid region option (for enchantments which have that option).