What's new in at-spi2-core 2.6.3: * Fix a crash when receiving a malformed event. * Fix atspi_accessible_get_index_in_parent when the parent is not cached * Fix crash in atspi_device_listener_new_simple. * registry: Fix a crash when removing hung processes. * registry: Fix deregistering of applications. * registry: Fix crash handling DeregisterKeystrokeListener * Fix some compiler warnings.