Update version for new release

Change-Id: Id86722edbe5d3981ae8f2f47e2fcc1a9483b34da
diff --git a/Changes b/Changes
index 444ff50..fe9468e 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,4 @@
+2.4.0 2023-02-07
         - Conversion of standard TEI P5 should now work, at least
           in some cases.
         - Option --xmlid-to-textsigle <from-regex>@<to-c/to-d/to-t>