only link jid from client to router once
cleanup message send code a little bit
use default callback (emit) when getting or setting vcard
parse roster items
pipe errors from router to lightstrean insteance to prevent uncaught exceptions
expose stanza base class Element
use dodo/node-xmpp-core#common-interface branch
expose ltx.Element
note backend dependencies in package.json as optionalDependencies
bump ltx-xpath version
bump version