[gnumeric] Document last change.

[Morten Welinder <mortenw src gnome org>]

commit b6d57ffa9c2b394112719793284abad69126fe45
Author: Morten Welinder <terra gnome org>
Date:   Thu Jun 11 18:11:25 2020 -0400

    Document last change.

 ChangeLog | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/ChangeLog b/ChangeLog
index 4953152d2..9af6ade0b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2020-06-11  Morten Welinder  <terra gnome org>
+
+       * src/ssconvert.c (merge_single): Also merge document-level
+       images.  Fixes #496.
+
 2020-06-04  Morten Welinder  <terra gnome org>
 
        * src/sheet-filter.c (gnm_filter_remove): Remove fields in