Proximity (Text) Chat

Added

• Select your channel with /channel global or /channel prox.
• Change the radius of your proximity chat with /radius <radius> (Eg: /radius 50).
• Quickly send a proximity message from the global channel (and vice versa!) by adding # (hash and space) to the beginning of your message. Eg: # Is anyone around me?.
• Server operators can change the default (default-proximity-radius=50) and maximum proximity radii (max-proximity-radius=50) in the server.properties file.