add whatsnew entry

mattip · mattip · commit 270f05db4c17 · 2018-01-12T13:19:29.000+02:00
diff --git a/doc/users/next_whats_new/2018_01_10_pypy_tkagg_support.rst b/doc/users/next_whats_new/2018_01_10_pypy_tkagg_support.rst
@@ -0,0 +1,7 @@
+Rework TkAgg backend to support PyPy
+------------------------------------
+
+PyPy_ can plot using the TkAgg backend, supported on PyPy 5.9
+and greater (both PyPy for python 2.7 and PyPy for python 3.5)
+
+.. _PyPy: https:/www.pypy.org
