[gtk] NEWS: More details about transforms

[Matthias Clasen <matthiasc src gnome org>]

commit df18223487eb9726d5bb9afca602f74f34c72c96
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Apr 6 23:32:37 2019 +0000

    NEWS: More details about transforms

 NEWS | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/NEWS b/NEWS
index 12dd7546e6..00191aa50a 100644
--- a/NEWS
+++ b/NEWS
@@ -52,7 +52,11 @@ Overview of Changes in GTK+ 3.96.0
   just by GtkWindow. This work is incomplete
 
 * GtkWidgets can transform their children using projective linear
-  transformations. This functionality is also available in CSS.
+  transformations. This functionality is available in CSS and
+  as GskTransform argument to gtk_widget_allocate. GtkFixed is
+  a container that exposes this functionality. For examples of this,
+  see the swing transition of GtkRevealer, the rotate transitions
+  of GtkStack or the Fixed Layout example in gtk-demo.
 
 * GtkEntry functionality has been moved into a new GtkText widget,
   the GtkEditable interface has been expanded, and new a new