[gimp] desktop: add some AppStream release items.

[Jehan <jehanp src gnome org>]

commit 9ce93ece00bc18c88474b931bd5030b23020ea04
Author: Jehan <jehan girinstud io>
Date:   Fri Feb 18 01:11:58 2022 +0100

    desktop: add some AppStream release items.
    
    These are visible enough changes (in the GUI) that they deserve to be
    mentioned here.

 desktop/org.gimp.GIMP.appdata.xml.in.in | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/desktop/org.gimp.GIMP.appdata.xml.in.in b/desktop/org.gimp.GIMP.appdata.xml.in.in
index e7d41cc43e..a63464630e 100644
--- a/desktop/org.gimp.GIMP.appdata.xml.in.in
+++ b/desktop/org.gimp.GIMP.appdata.xml.in.in
@@ -90,6 +90,12 @@
           Alt-click on visibility and lock icons in item dockables massively toggles visibility and locks 
among selected items
           </_li>
           <_li>
+          Item dockables now display icon headers for visibility and locks column
+          </_li>
+          <_li>
+          Our System theme shows visible hints around unset visibility and locks icons when hovering them in 
item dockables
+          </_li>
+          <_li>
           New checkbox to enable or disable dynamics in paint tools' options (replacing "Dynamics Off" 
dynamics)
           </_li>
           <_li>