[gegl] update NEWS

[Øyvind Kolås <ok src gnome org>]

commit 23f096e630add9489f3598f649cfb493aab3d195
Author: Øyvind Kolås <pippin gimp org>
Date:   Tue Oct 3 19:08:08 2017 +0200

    update NEWS

 docs/NEWS.txt |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/docs/NEWS.txt b/docs/NEWS.txt
index 396eae5..9c1317c 100644
--- a/docs/NEWS.txt
+++ b/docs/NEWS.txt
@@ -1,3 +1,24 @@
+GEGL-0.3.22 2017-10-
+--------------------
+
+Core
+~~~~
+
+Reduced temporary buffer allocation overhead in mipmap downscaling and
+autothreading code. Completely avoid loading plug-ins .so with -gpl3 in
+filename unless the application using GEGL explicitly has enabled GPL3
+operations.
+
+Operations
+~~~~~~~~~~
+
+Improved threading awareness/capabilities of gegl:copy-buffer, gegl:wind,
+gegl:color-enhance, gegl:photocopy, gegl:matting-levin.
+Fixed grayscale behavior of gegl:noise-hurl.
+OpenCL vs CPU consistency fix for gegl:threshold, and optimization of
+gegl:wavelet-blur by decomposing to two 1d passes.
+
+
 GEGL-0.3.20 2017-08-15
 ----------------------