Changelog for relative dates (#2418, #2598)

Author: sampsyo

docs/changelog.rst

@@ -13,6 +13,9 @@ Features:
 * :ref:`Date queries <datequery>` can now include times, so you can filter
   your music down to the second. Thanks to :user:`discopatrick`. :bug:`2506`
   :bug:`2528`
+* :ref:`Date queries <datequery>` can also be *relative*. You can say
+  ``added:-1w..`` to match music added in the last week, for example. Thanks
+  to :user:`euri10`. :bug:`2598`
 * A new :doc:`/plugins/gmusic` lets you interact with your Google Play Music
   library. Thanks to :user:`tigranl`. :bug:`2553` :bug:`2586`
 * :doc:`/plugins/replaygain`: We now keep R128 data in separate tags from