Add a remote-address symbol to io.sockets, with-client binds it, ditto for io.servers.connection
io.sockets.secure now has two new words, send-secure-handshake, accept-secure-handshake, to upgrade existing connections
Add millis as a library word
sleep now takes either a duration or a microsecond count; code using durations doens't need to be updated, code using millisecond counts updated to use durations for the most part