Add support for Python 3.11

Signed-off-by: Daniel Ziegenberg <daniel@ziegenberg.at>

Author: ziegenberg

.travis.yml

@@ -9,7 +9,8 @@ python:
   - "3.7"
   - "3.8"
   - "3.9"
-  - "3.10-dev"
+  - "3.10"
+  - "3.11"
 
 install:
   - pip install -U pip setuptools  # https://github.com/pypa/virtualenv/issues/1630

pyproject.toml

@@ -20,6 +20,7 @@ classifiers = [
   "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 :: PyPy",
   "Topic :: Security :: Cryptography",

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 # Environment changes have to be manually synced with '.travis.yml'.
-envlist = py37,py38,py39,py310
+envlist = py37,py38,py39,py310,py311
 isolated_build = True
 
 [pytest]