blacktest matrix

Author: hovey

.github/workflows/blacktest.yml

@@ -11,8 +11,9 @@ jobs:
       matrix:
         # python-version: [3.9.5, 3.10.0]
         # python-version: [3.9.5]
-        python-version: [3.9]
+        # python-version: [3.9]
         # python-version: [3.10.0]
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
     - uses: actions/checkout@v2