ci: python 3.7, 3.10

Author: scivision

.github/workflows/ci.yml

@@ -4,16 +4,22 @@ on:
   push:
     paths:
       - "**.py"
+      - ".github/workflows/ci.yml"
 
 jobs:
 
   linux:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [ '3.7', '3.10' ]
+    name: Lint Python ${{ matrix.python-version }}
+
     steps:
     - uses: actions/checkout@v2
     - uses: actions/setup-python@v2
       with:
-        python-version: '3.x'
+        python-version: ${{ matrix.python-version }}
 
     - run: pip install .[lint]