setup.py: Python 3.11

Author: langston-barrett

setup.py

@@ -39,6 +39,7 @@ def readme():
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: Stackless',
         'Topic :: Documentation',