[gimp] NEWS: add improved PCX support.

[Jehan Pagès <jehanp src gnome org>]

commit b610d97ec05a0c5a93c7740adc68ea02022ecc5a
Author: Jehan <jehan girinstud io>
Date:   Fri Jun 9 13:52:16 2017 +0200

    NEWS: add improved PCX support.

 NEWS |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index d3a1d0f..25958ef 100644
--- a/NEWS
+++ b/NEWS
@@ -177,6 +177,11 @@ File Formats
     (configurable in Preferences > Import).
   - Support writing PNM files with 16-bit image precision.
   - Make the default raw (DLSR) image importer configurable.
+  - Improve support for PCX files:
+    * saving 1bpp and 4bpp images (according to palette size).
+    * loading 2bpp, 2 planes/1bpp, 3 planes/1bpp and 4bpp images.
+    * non-Black&White monochrome PCX files (any 2 colors according to
+      the palette).
 
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