[gimp/gimp-2-10] 2.10.18: update NEWS

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit 197bd743c8485e71127f3cf6bd41c16899bbc849
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Sun Feb 23 13:06:46 2020 +0300

    2.10.18: update NEWS

 NEWS | 28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)
---
diff --git a/NEWS b/NEWS
index 305eb74a1b..3259f1ab93 100644
--- a/NEWS
+++ b/NEWS
@@ -20,7 +20,24 @@ Core:
 
 User interface:
 
-  - Bump the symbolic theme contrast just a little due to popular complaint
+  - Add new Symbolic-High-Contrast and Symbolic-Inverted-High-Contrast
+    themes, which are automatically-generated high-contrast variants of
+    the (original) Symbolic theme.  The contrast factor is settable in
+    the makefile, and is currently at 1.5 for both themes.
+    
+  - Rename tools/invert-svg to tools/svg-contrast, which now takes a
+    contrast-factor argument, and adjusts the input SVG contrast,
+    instead of just inverting it.  Note that we can still use the tool
+    to invert icons, using a contrast of -1.
+
+  - Allow horizontal scrollbars in all the Preferences dialog tree-
+    views, so that they don't limit the minimal width of the dialog (in
+    particular, the UI- and icon-theme tree-views may contain
+    arbitrarily-long paths).
+
+  - Draw a border around the color FG/BG color areas as a pair of black
+    and white rectangles instead of letting GTK do this. This imporoves
+    the legibility of borders, especially in dark themes.
 
 Tools:
 
@@ -35,19 +52,20 @@ Plug-ins:
 
 Updated translations:
 
-  - Catalan, Danish, Spanish, Ukrainian
+  - Basque, Catalan, Danish, Polish, Spanish, Swedish, Ukrainian
 
 Bug fixes:
 
-  #4643
+  - #4643, #4634
 
 Developers:
 
-  - Alexandre Prokoudine, Ell, Massimo Valentini
+  - Ell, Massimo Valentini
 
 Translators:
 
-  - Alan Mortensen, Daniel Korostil, Jordi Mas, Rodrigo Lledó Milanca
+  - Alan Mortensen, Anders Jonsson, Asier Sarasua Garmendia, Daniel
+    Korostil, Jordi Mas, Piotr Drąg, Rodrigo Lledó Milanca
 
 
 Overview of Changes from GIMP 2.10.14 to GIMP 2.10.16