Python 3.10 and 3.11 are also supported

We've been running 3.11 on CI for a while now.

Author: WhyNotHugo

CHANGELOG.rst

@@ -19,6 +19,7 @@ Version 0.19.2
   "filesystem/icalendar"`` or ``type = "filesystem/vcard"``. This has not
   functional impact, and is merely for forward compatibility with the Rust
   implementation of vdirsyncer.
+- Python 3.10 and 3.11 are officially supported.
 
 Version 0.19.1
 ==============

docs/installation.rst

@@ -42,7 +42,7 @@ If your distribution doesn't provide a package for vdirsyncer, you still can
 use Python's package manager "pip". First, you'll have to check that the
 following things are installed:
 
-- Python 3.7+ and pip.
+- Python 3.7 to 3.11 and pip.
 - ``libxml`` and ``libxslt``
 - ``zlib``
 - Linux or macOS. **Windows is not supported**, see :gh:`535`.

setup.py

@@ -74,6 +74,8 @@ def run(self):
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Topic :: Internet",
         "Topic :: Utilities",
     ],