WORLDGUARD-2370 - Reported by gsand

Re: CommandHelper
http://redmine.sk89q.com/issues/2168#change-4327

To allow other plugins to run custom functions or messages when entering or leaving regions.

Comment by mikef

Thanks for adding this one - would welcome this function

Comment by Cayorion

Yeah I would love this feature as well.

Top result when googling "world guard region enter event" is
http://dev.bukkit.org/bukkit-plugins/worldguard-region-events/
Using this plugin probably could work but I'm sure you could create better official events.
This plugin starts new threads :S

#1533