Add Python 3.12 (#674)

Author: Dreamsorcerer

.github/workflows/ci.yaml

@@ -49,7 +49,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        pyver: ['pypy-3.8', '3.8', '3.9', '3.10', '3.11']
+        pyver: ['pypy-3.8', '3.8', '3.9', '3.10', '3.11', '3.12']
     timeout-minutes: 15
     steps:
     - name: Checkout

setup.py

@@ -35,6 +35,7 @@ def read(f):
           "Programming Language :: Python :: 3.9",
           "Programming Language :: Python :: 3.10",
           "Programming Language :: Python :: 3.11",
+          "Programming Language :: Python :: 3.12",
           'Topic :: Internet :: WWW/HTTP',
           'Framework :: AsyncIO',
       ],