Add whatsnew for scatter no longer flattening.

anntzer · anntzer · commit 2109a63f8791 · 2017-04-15T15:53:33.000-07:00
diff --git a/doc/users/whats_new/scatter_no_longer_flattens.rst b/doc/users/whats_new/scatter_no_longer_flattens.rst
@@ -0,0 +1,6 @@
+`Collection` offsets are no longer implicitly flattened
+-------------------------------------------------------
+
+`Collection` (and thus `scatter` -- both 2D and 3D) no longer implicitly
+flattens its offsets.  As a consequence, `scatter`'s x and y arguments can no
+longer be 2+-dimensional arrays.
