Update Python Testing Matrix (#200)

Update Python Testing Matrix

Author: alimcmaster1

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       max-parallel: 8
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8]
+        python-version: [3.5, 3.6, 3.7, 3.8, 3.9, 3.10]
     steps:
     - uses: actions/checkout@v2