Run isort on save

.vscode/settings.json

@@ -2,5 +2,10 @@
     "python.linting.flake8Enabled": true,
     "python.linting.enabled": true,
     "python.linting.pylintEnabled": false,
-    "python.formatting.provider": "yapf"
+    "python.formatting.provider": "yapf",
+    "[python]": {
+        "editor.codeActionsOnSave": {
+            "source.organizeImports": true
+        }
+    }
 }