3.57.1 - 2026-08-14
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* Add extra checks around construction of object destroy notifier :mr:`560`
* `GLib.Pid` should be a number with a special `close` method :mr:`556`
* Use `PathLike` objects for `Gtk.Template` :mr:`555`
* Fast marshalling of `bytearray` to `GBytes` :mr:`558`
* Prevent crashes where `GValue` is `NULL` :mr:`559`