Simple Per World Chat

What does PerWorldChat do? It is a very simple plugin that allows players to see chat from players that are in the same world as them, and link worlds together. Linked worlds can see chat from other worlds that are linked. Players with a certain permission can see ALL chat.

Commands:
/pwc- displays general information + the commands you have access to
/perworldchat global or /pwc global [insert message here] - send a global broadcast to players in all worlds
/perworldchat link or /pwc link - adds the world you are currently standing in to the list of linked worlds.
/perworldchat unlink or /pwc unlink - removes the world you are currently standing in from the list of linked worlds.
/perworldchat reload or /pwc reload - reloads the config.

Permissions:
perworldchat.override: Can use the /pwc global command
perworldchat.link: can link / unlink worlds
perworldchat.help: can display help info for pwc
perworldchat.reload: can use /pwc reload
perworldchat.admin: can see all chat from any world (linked or unlinked)
All permissions above are given to OPs by default.