Test with Python 3.11 (#401)

Author: sir-sigurd

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
       matrix:
         # Only test supported Python versions:
         # https://endoflife.date/python
-        python-version: ["3.7", "3.8", "3.9", "3.10", "pypy3.9"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "pypy3.9"]
 
     steps:
       - name: Checkout code

README.rst

@@ -35,7 +35,7 @@ start up and is typically ~20% slower in execution.  You can find out how
 pyvips installed with ``pip show pyvips``.
 
 This binding passes the vips test suite cleanly and with no leaks under
-python2.7 - python3.10, pypy and pypy3 on Windows, macOS and Linux. 
+python2.7 - python3.11, pypy and pypy3 on Windows, macOS and Linux. 
 
 How it works
 ------------

setup.py

@@ -41,6 +41,7 @@
     'Programming Language :: Python :: 3.8',
     'Programming Language :: Python :: 3.9',
     'Programming Language :: Python :: 3.10',
+    'Programming Language :: Python :: 3.11',
     'Programming Language :: Python :: Implementation :: PyPy',
     'Programming Language :: Python :: Implementation :: CPython',
 ]

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 skipdist = true
 
-envlist = py{37,38,39,310,py39}-test
+envlist = py{37,38,39,310,311,py39}-test
 
 [pytest]
 norecursedirs = .eggs build tmp* vips-*