Update linter config for VS code

.vscode/settings.json

@@ -1,15 +1,12 @@
 {
-    "python.pythonPath": "venv/bin/python",
     "python.testing.pytestArgs": [
         "tests"
     ],
     "python.testing.unittestEnabled": false,
-    "python.testing.nosetestsEnabled": false,
     "python.testing.pytestEnabled": true,
     "editor.formatOnSave": true,
-    "python.formatting.provider": "black",
-    "python.formatting.blackArgs": [
+    "black-formatter.args": [
         "-l",
         "100"
-    ]
+    ],
 }

stylecheck.sh

@@ -2,9 +2,9 @@
 
 pushd "${VIRTUAL_ENV}/.." > /dev/null
 
-python -m black -l 100 xcodeproj/*.py tests/*.py
-python -m pylint --rcfile=pylintrc xcodeproj tests
-python -m mypy --ignore-missing-imports xcodeproj/ tests/
+python3 -m black -l 100 xcodeproj/*.py tests/*.py
+python3 -m pylint --rcfile=pylintrc xcodeproj tests
+python3 -m mypy --ignore-missing-imports xcodeproj/ tests/
 
 popd > /dev/null