DOC: Add a whats_new entry for the new AbstractMovieWriter class.

WarrenWeckesser · WarrenWeckesser · commit 6bae745d2331 · 2015-12-29T01:58:18.000-05:00
diff --git a/doc/users/whats_new/abstract_movie_writer.rst b/doc/users/whats_new/abstract_movie_writer.rst
@@ -0,0 +1,8 @@
+Abstract base class for movie writers
+-------------------------------------
+
+The new :class:`~matplotlib.animation.AbstractMovieWriter` class defines
+the API required by a class that is to be used as the `writer` in the
+`save` method of the :class:`~matplotlib.animation.Animation` class.
+The existing :class:`~matplotlib.animation.MovieWriter` class now derives
+from the new abstract base class.
