What's new in at-spi2-core 2.57.0:

* device-a11y-manager: Fix crash on dispose

* device-a11y-manager: Check properly for the DBus backend presence
* DeviceEventController: update mouse coordinates before sending button events

* atspi-device-legacy: Don't crash when XkbGetMap fails

* Return localized role name for ATSPI_ROLE_EDITBAR

    atk-adaptor: Reconnect when the bus launcher reappears.

* Don't keep references to uncached objects in the application's hash table.

* Add some Python overrides.

    AtspiDeviceX11: Suppress window events following key grabs when needed.