Advertize and test Python 3.11 support

Change-Id: Ic1d5aaaf8043e4c1c732b37410a88e5b22e54b44
diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 9bca603..59b42cb 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -10,7 +10,7 @@
       max-parallel: 6
       fail-fast: false
       matrix:
-        python-version: ['3.9', '3.10']
+        python-version: ['3.9', '3.10', '3.11']
         r-version: [release]
         os: [windows-latest, macOS-latest, ubuntu-latest]
     steps:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6d3db0d..effffa6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Version history
 
+- advertise support for Python 3.11
+
 ## 0.7.5
 
 - Updates recommended RKorAPClient version to 0.7.5
diff --git a/setup.py b/setup.py
index 23a9c21..1a29442 100644
--- a/setup.py
+++ b/setup.py
@@ -20,6 +20,7 @@
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3.11',
         'License :: OSI Approved :: BSD License',
         'Operating System :: OS Independent',
         'Intended Audience :: Developers',