Add wheel builds for Python 3.10

Author: mwcraig

.github/workflows/upload_pypi.yml

@@ -11,8 +11,8 @@ jobs:
       max-parallel: 4
       fail-fast: false
       matrix:
-        python-version: [3.7, 3.8, 3.9]
-        platform: [macos-latest, windows-latest]  # No wheels on linux yet
+        python-version: [3.7, 3.8, 3.9, 3.10]
+        platform: [macos-latest, windows-latest]  # Wheels on linux below
     runs-on: ${{ matrix.platform }}
 
     steps:
@@ -55,9 +55,9 @@ jobs:
         python -m pip install --upgrade pip
         pip install twine
     - name: Python wheels manylinux build
-      uses: RalfG/python-wheels-manylinux-build@v0.3.4
+      uses: RalfG/python-wheels-manylinux-build@v0.4.0
       with:
-        python-versions: 'cp36-cp36m cp37-cp37m cp38-cp38'
+        python-versions: 'cp37-cp37m cp38-cp38 cp39-cp39 cp310-cp310'
         build-requirements: 'setuptools cython'
     - name: Build and publish wheel
       env:
@@ -73,7 +73,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v1
       with:
-        python-version: '3.8'
+        python-version: '3.10'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip