NEWS: update.

NEWS

@@ -15,6 +15,12 @@ Core:
     channel is now a fully opaque mask.
   - Major non-destructive filter code refactoring.
   - Lock Content now generates undo steps.
+  - NDE filters are now allowed on channels.
+  - Merging filter will now add an alpha channel to a layer if required.
+  - Refactoring Photoshop stream loading functions.
+  - Loading Photoshop patterns (RGB and Grayscale) is now supported.
+  - The histogram editor now shows a "Compute unique colors:" checkbox
+    which will display the unique color count in the image.
 
 Graphical User Interface:
 
@@ -69,11 +75,21 @@ API:
   - Changes in libgimpui:
     * New functions:
       + gimp_procedure_dialog_get_coordinates()
+    * gimp_procedure_dialog_get_widget() will now generate a radio frame
+      widget for GimpChoice arguments of 2 choices only (and will still
+      default to a combo box for larger choices list).
+
+PDB:
+
+  - none_ok tag now allowed on sample_point and guide PDB types.
 
 Build:
 
   - Windows: file format associations list now generated by the build
     system.
+  - Flatpak: verify nightly flatpak dependencies with the
+    flatpak-external-data-checker (like we do for stable and beta
+    flatpaks).
 
 
 Overview of Changes from GIMP 3.0.2 to GIMP 3.0.4