Merge pull request #5 from ScrapingAnt/feature/issue2-matrix-builds

feature/issue2-matrix-builds: added matrix builds

Author: megabotan

.github/workflows/code_checks.yaml

@@ -4,12 +4,19 @@ on: push
 
 jobs:
   code_checks:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        pyver: [ 3.6, 3.7, 3.8, 3.9 ]
+        no-extensions: [ '', 'Y' ]
+        os: [ ubuntu, macos, windows ]
+      fail-fast: true
+    runs-on: ${{ matrix.os }}-latest
+    timeout-minutes: 5
     steps:
-      - name: Set up Python
+      - name: Set up Python ${{ matrix.pyver }}
         uses: actions/setup-python@v1
         with:
-          python-version: 3.7
+          python-version: ${{ matrix.pyver }}
       - name: Checkout
         uses: actions/checkout@v2
       - name: Init