add NEWS

diff --git a/doc/news/version_3.11.mdwn b/doc/news/version_3.11.mdwn
index 9cef6f6712b736e3293aa1a90815d0f7a7e84735..2ef1b8c122c1d9dec2e60f7771e9d27bddd63824 100644 (file)
--- a/doc/news/version_3.11.mdwn
+++ b/doc/news/version_3.11.mdwn
@@ -1,3 +1,8 @@
+You may want to run `ikiwiki-transition deduplinks /path/to/srcdir`
+after upgrading to this version of ikiwiki. This command will
+optimise your wiki's saved state, removing duplicate information
+that can slow ikiwiki down.
+
 ikiwiki 3.11 released with [[!toggle text="these changes"]]
 [[!toggleable text="""
    * Avoid using python-support. Closes: #[525086](http://bugs.debian.org/525086)
@@ -20,4 +25,4 @@ ikiwiki 3.11 released with [[!toggle text="these changes"]]
      if they wish to, if the configuration makes signin optional
      for commenting.
    * Updated Danish translation from Jonas Smedegaard. Closes: #[525751](http://bugs.debian.org/525751)
-   * translation.mdwn: Typo fixes. Closes: #[525753](http://bugs.debian.org/525753)"""]]
\ No newline at end of file
+   * translation.mdwn: Typo fixes. Closes: #[525753](http://bugs.debian.org/525753)"""]]