add python 3.11 support (#205)

* add python 3.11 support

* test sqlite on more Python versions, and upload coverage for Python 3.11

.github/workflows/tests.yaml

@@ -28,7 +28,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                python-version: ['3.7', '3.8', '3.9', '3.10']
+                python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
 
         # Service containers to run with `container-job`
         services:
@@ -67,13 +67,13 @@ jobs:
                   PG_PASSWORD: postgres
             - name: Upload coverage
               uses: codecov/codecov-action@v1
-              if: matrix.python-version == '3.7'
+              if: matrix.python-version == '3.11'
 
     test_sqlite:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                python-version: [3.7, 3.8, 3.9]
+                python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
 
         steps:
             - uses: actions/checkout@v2
@@ -90,4 +90,4 @@ jobs:
               run: ./scripts/test-sqlite.sh
             - name: Upload coverage
               uses: codecov/codecov-action@v1
-              if: matrix.python-version == '3.7'
+              if: matrix.python-version == '3.11'

setup.py

@@ -84,6 +84,7 @@ def extras_require() -> t.Dict[str, t.List[str]]:
         "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",
     ],
 )