git-svn-id: https://jules.scsys.co.uk/repository/shadowcat-code/scratchpad/matthewt/sig/lib@2289
8a6f57db-631f-0410-b083-dc7c4259d016
< skington> You can say ->add(months => -2) instead, though.
< skington> Which is correct *and* looks wrong, so you know you’re in the
world of dates and times!
+%
+< ChoHag> I'm not sure if I should have made this thing, but I did.