[gimp] NEWS: keep up-to-date.

[Jehan Pagès <jehanp src gnome org>]

commit c5c0dbcd2490dd30710404d32b4654a3b440feab
Author: Jehan <jehan girinstud io>
Date:   Sun Mar 18 01:16:13 2018 +0100

    NEWS: keep up-to-date.

 NEWS |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 07b1769..122d336 100644
--- a/NEWS
+++ b/NEWS
@@ -76,6 +76,9 @@ Libgimp:
    - Use gegl:distance-transform in gimp_edit_blend() implementation
      making it much faster for all GRADIENT_SHAPEBURST_* gradient types.
      Legacy gimp:shapeburst operation has been deleted.
+   - New gimp_context_get_distance_metric() and
+     gimp_context_set_distance_metric() for distance metric used in
+     gimp_edit_blend() (and future usage).
 
 GUI and Usability: