What's new in at-spi2-atk 2.3.3: * Fix for BGO#664822 - gnome-shell crash when an AT is launched * Fix a reference leak if a child-added signal has no object value. * Change a : to a / in the suffix to an event, to allow DBus match rules using arg0path. * Only deregister objects when they are marked defunct, not when a previously defunct object is marked as no longer defunct.