[gimp] Update NEWS

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit 7841d04ee8997789d56345868cc97460b42b51d4
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Sun Jun 11 23:45:43 2017 +0300

    Update NEWS

 NEWS |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 25958ef..818c5ab 100644
--- a/NEWS
+++ b/NEWS
@@ -144,6 +144,10 @@ Tools:
     discarded on tool change anymore.
   - For Intelligent Scissors, GIMP now checks whether the first and the
     last isegments are distinct before closing the curve.
+  - Flip tool: add Clipping option to the flip tool. Add support for
+    reflecting across guides: when clicking on a guide while using the
+    Flip tool, reflect the active item across the guide, rather than
+    around its center.
 
 Painting: