Release 4.3.1

Author: mrbean-bremen

Diff for: CHANGES.md

@@ -3,6 +3,11 @@ The released versions correspond to PyPi releases.
 
 ## Version 4.4.0 (as yet unreleased)
 
+## [Version 4.3.1](https://pypi.python.org/pypi/pyfakefs/4.3.1) (2020-11-23)
+
+This is an update to the performance release, with more setup caching and the
+possibility to disable it. 
+
 ### Changes
 * Added caching of patched modules to avoid lookup overhead  
 * Added `use_cache` option and `clear_cache` method to be able

Diff for: setup.py

@@ -41,6 +41,7 @@
     'Programming Language :: Python :: 3.6',
     'Programming Language :: Python :: 3.7',
     'Programming Language :: Python :: 3.8',
+    'Programming Language :: Python :: 3.9',
     'Programming Language :: Python :: Implementation :: CPython',
     'Programming Language :: Python :: Implementation :: PyPy',
     'Operating System :: POSIX',