+udev 174
+========
+Bugfixes.
+
+The path_id, usb_id, input_id tools are built-in commands now
+and the stand-alone tools do not exist anymore. For testing,
+the commands can be run with 'udevadm test-builtin <cmd>'.
+
+The fusectl filesystem is no longer mounted directly from udev.
+Systemd systems will take care of mounting fusectl and configfs
+now. Non-systemd systems need to ship their own rule if they
+need these filesystems auto-mounted.
+
+The long deprecated keys: SYSFS, ID, BUS have been removed.
+
+The support for 'udevadm trigger --type=failed, and the
+RUN{fail_event_on_error} attribute was removed.
+
+udev 173
+========
+Bugfixes.
+
+The udev-acl extra is no longer enabled by default now. To enable it,
+--enable-udev_acl needs to be given at ./configure time. On systemd
+systems, the udev-acl rules prevent it from running as the functionality
+has moved to systemd.
+
udev 172
========
Bugfixes.