Fix typo in testing IRC server version

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
Happy new year

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
Add listener tests

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
Password is checked in listener, no longer in publisher

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
Add a test for PublisherThread.send_line

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
Only call once logging setup in tests, to avoid duplicated messages

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>