Bumped up the version number

CHANGES.rst

diff --git a/CHANGES.rst b/CHANGES.rst
index 01e5b0f..879cfa1 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,5 +1,5 @@
-Unreleased
-==========
+3.2.0
+=====
 
 - The ThreadPoolExecutor class constructor now accepts an optional ``thread_name_prefix``
   argument to make it possible to customize the names of the threads created by the pool.

setup.py

diff --git a/setup.py b/setup.py
index 6b03042..d45e66d 100755
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@
     readme = f.read()
 
 setup(name='futures',
-      version='3.1.1',
+      version='3.2.0',
       description='Backport of the concurrent.futures package from Python 3',
       long_description=readme,
       author='Brian Quinlan',