Add CHANGELOG and docs for #178

Author: nicoddemus

CHANGELOG.rst

@@ -1,3 +1,14 @@
+3.0.0 (UNRELEASED)
+------------------
+
+* Python 2.7 and 3.4 are no longer supported. Users using ``pip 9`` or later will install
+  a compatible version automatically.
+
+* ``mocker.spy`` now also works with ``async def`` functions (`#179`_). Thanks `@frankie567`_ for the PR!
+
+.. _#179: https://github.com/pytest-dev/pytest-mock/issues/179
+.. _@frankie567: https://github.com/frankie567
+
 2.0.0 (2020-01-04)
 ------------------
 

README.rst

@@ -114,6 +114,8 @@ In addition, spy objects contain two extra attributes:
 
 ``mocker.spy`` also works for class and static methods.
 
+As of version 3.0.0, ``mocker.spy`` also works with ``async def`` functions.
+
 .. note::
 
     In versions earlier than ``2.0``, the attributes were called ``return_value`` and