Add support for Python 3.11

With the release of Python 3.11 on 2022-10-24 we should add it to our
supported Python versions. This includes an appropriate PyPI trove
classifier and adding it to the Python versions that are tested in our
GitHub Actions workflow.

.github/workflows/build.yml

@@ -114,6 +114,7 @@ jobs:
           - "3.8"
           - "3.9"
           - "3.10"
+          - "3.11"
         include:
           - os: ubuntu-20.04
             python-version: "3.6"
@@ -208,6 +209,7 @@ jobs:
           - "3.8"
           - "3.9"
           - "3.10"
+          - "3.11"
         include:
           - os: ubuntu-20.04
             python-version: "3.6"
@@ -259,6 +261,7 @@ jobs:
           - "3.8"
           - "3.9"
           - "3.10"
+          - "3.11"
         include:
           - os: ubuntu-20.04
             python-version: "3.6"

setup.py

@@ -80,6 +80,7 @@ def get_version(version_file):
         "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",
     ],
     python_requires=">=3.6",