Chat states may be set using:
msg['chat_state'].active()
msg['chat_state'].composing()
msg['chat_state'].gone()
msg['chat_state'].inactive()
msg['chat_state'].paused()
Checking a chat state can be done with either:
msg['chat_state'].getState()
msg['chat_state'].name
When a message with a chat state is receieved, the following events
may occur:
chatstate_active
chatstate_composing
chatstate_gone
chatstate_inactive
chatstate_paused
where the event data is the message stanza. Note that currently these
events are also triggered for messages sent by SleekXMPP, not just those
received.
