[gegl] NEWS: accumulate for 0.4.20

[Øyvind "pippin" Kolås <ok src gnome org>]

commit ae1122afcffc96963124092ffa5d7e2825ac688c
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat Dec 21 11:27:43 2019 +0100

    NEWS: accumulate for 0.4.20

 docs/NEWS.txt | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
---
diff --git a/docs/NEWS.txt b/docs/NEWS.txt
index bbd50a6d5..26f4c508d 100644
--- a/docs/NEWS.txt
+++ b/docs/NEWS.txt
@@ -1,3 +1,30 @@
+GEGL-0.4.20 2019-12-xx
+----------------------
+
+Build
+~~~~~
+
+Improve architecture detection for win32, fixing build on some archs, fix
+meson build on darwin.
+Improve CI for potential different type test runs.
+
+Buffer
+~~~~~~
+
+Pass O_BINARY where relevant on windows.
+Avoid 32bit overflows in computations for gegl_buffer_set and gegl_buffer_get.
+
+Core
+~~~~
+
+Avoid running more thread jobs than there are pixels to process.
+
+Operations
+~~~~~~~~~~
+
+Improved edge handling for gegl:distance-transform
+
+
 GEGL-0.4.18 2019-10-27
 ----------------------