set the key only if application wishes to set (accept the key) it
(Do this to 1.0).
+ o Remove conn->current_channel.
+
o Additions to do after protocol version 1.1:
o Add support for list of errors in command replies. Protocol
16. Add STATS command after all to the protocol for providing practically
same information client gets when connects to a server. Normal
server would send this to router always when received from client.
+
+ 17. Cell wide channel founder support, and permanent channels when
+ founder mode set.
+
+ 18. UTF-8 requirement checkings for all specifications, when strings
+ are sent. http://www.cl.cam.ac.uk/~mgk25/unicode.html