Prepare for 4.23 release

* NEWS: Update for 4.23 release.

diff --git a/NEWS b/NEWS
index 79826deb13d1314bad8e4864779bd80d167488f5..29602bedcb47e5f4750effc9ed6dca351e0a30d3 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,4 @@
-Noteworthy changes in release ?.?? (????-??-??)
+Noteworthy changes in release 4.23 (2018-06-14)
 ===============================================
 
 * Changes in behaviour