[gimp] NEWS: adding smooth scroll coming with GTK3.

[Jehan <jehanp src gnome org>]

commit 39a2974cdf155f6c1d7fdd944dd88f8aaca2c9c1
Author: Jehan <jehan girinstud io>
Date:   Tue Jun 15 20:00:48 2021 +0200

    NEWS: adding smooth scroll coming with GTK3.
    
    Something which came with the 2.99.2 release already, though I update
    the NEWS file retroactively because we forgot to write this down and
    that's a pretty important feature (for ctrl-scroll zooming for instance,
    which became a lot more useful in GIMP 2.99.x). This should not be
    forgotten when we'll write the GIMP 3 release note, so I'm adding it in
    this file where we'll get most contents from.

 NEWS | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/NEWS b/NEWS
index 8208d089d2..13288b935d 100644
--- a/NEWS
+++ b/NEWS
@@ -486,6 +486,8 @@ User Interface:
     * Various dialogs now use Client-Side decorations and modern GTK+
       widgets are being used when relevant (e.g. GtkSwitch which gives a
       better feeling of a general "ON/OFF state").
+    * Progressive/smooth scroll actions (e.g. ctrl+scroll for zooming)
+      are now possible.
   - Image display rendered faster with a render cache that keeps the
     result of scaling, color management, display filters and shell mask
     (for tools like fuzzy select).