3.21.92 11-Sep-2016
        - Handle nullable filename parameters (Christoph Reiter) (#770821)
        - Fix list/hashtable enum <-> hash conversion on 64-bit big endian (Aurelien Jarno) (#770608)
        - Allow passing sockets to io_add_watch on win32 (Lukas K) (#766396)
        - tests: use dbus-run-session instead of dbus-launch to run tests (Michael Biebl) (#770798)
        - configure.ac: post-release version bump to 3.21.92 (Christoph Reiter)