Bump to 2.9.1

setup.py

@@ -20,7 +20,7 @@ elif (3, 0) < version < (3, 3):
           ' ({}.{} detected).'.format(*version))
     sys.exit(-1)
 
-VERSION = '2.9'
+VERSION = '2.9.1'
 
 install_requires = ['psutil', 'colorama', 'six', 'decorator']
 extras_require = {':python_version<"3.4"': ['pathlib']}