Features:
+* Maybe add support for the equivalent of "ethtool advertise" to .link files?
+ http://lists.freedesktop.org/archives/systemd-devel/2015-April/030112.html
+
+* fstab-generator should generate systemd-fsck-root.service when
+ running in the initrd, and operate on the right device.
+
* the default stop timeout for units is not documented anywhere.
* .timer units should optionally support CLOCK_BOOTTIME in addition to CLOCK_MONOTONIC