add a GSL entry to changes.h

diff --git a/doc/news/changes.h b/doc/news/changes.h
index 0965897dc091df92b3318d0975efc8b1a2d28291..a93b10235f95ed9c605ab07acb696648c7378d4e 100644 (file)
--- a/doc/news/changes.h
+++ b/doc/news/changes.h
@@ -121,6 +121,13 @@ inconvenience this causes.
 
 <ol>
 
+ <li> New: Added an interface to the GNU Scientific Library. Also introduce a
+ cubic spline interpolation function Functions::CSpline.
+ <br>
+ (Denis Davydov, 2016/04/28)
+ </li>
+
+
  <li> New: Added move operations to BlockIndices, BlockVectorBase and
  BlockVector; Vector move operations nullify old object instead of
  using swap.