Implement MainWindow::lookup_multicast_participant_row() and MainWindow::MulticastParticipantRow::set_connected().
Simplify MainWindow::MulticastParticipantRow::set_connected().
Reimplement MulticastParticipants::add().
Reimplement MainWindow::add_multicast_participant() and fix bug in MulticastParticipantRow constructor.
Add signal notifying about new connection in TcpService.
Add connection_row_box.glade.
Polish multicast_participant_row_box.glade.
Redesign send() and receive() methods in Connection class and implement send().
Remove send() and receive() methods from TcpConnection.
Update Service, create instance of Connections and initialize TcpServic with signal callback.
Bump GTK+ and Glib requirements and drop dependency on GnuTLS.