Release 3.12.0. * `ObjectServer` should dispatch calls without destination since p2p connections typically don't have destinations. * Only enable features of `nix` that we use. * Support server-side cookie auth. We already supported client-side cookie-auth. zbus won't manage the cookies for you though, that's left to the bus implementation. * Declare `ConnectionBuilder` as `must_use`. Instead of every builder method of it individually. * Avoid a few string allocations in handshake code. * Don't ignore errors from SID conversion to string. * Add missing cfg on an import. Otherwise we get a warning when building for non-unix. * Dependencies changed: * Home directory determination now split into a separate crate: `xdg-home`. * Drop `lazy_static`. * Drop now unneeded `dirs` dep. * Drop `nix` dep for non-unix (i-e Windows).