- Update to 0.6.2:
* Properly close connection to server if ^C is pressed in
interactive mode.
* Replace invalid characters by UTF8 replacement char.
* Add warning that there is no Ox support for messages of type
headline.
* Suppress warnings about reading from closed connection if
go-sendxmpp closes the connection before exiting.
* Remove unnecessary newlines after stanzas.
* Fix segfault when authentication fails due to invalid username
or password.