Improve GitHub Action workflow (#214)

* Include the Python version in step names

* Print code formatting changes Black would make

* Add GitHub Action changes to CHANGELOG.md

.github/workflows/pythonpackage.yml

@@ -31,15 +31,15 @@ jobs:
             poetry lock
             poetry install
           fi
-      - name: Pylint
+      - name: Pylint (Python v${{ matrix.python-version }})
         run: poetry run pylint functional
-      - name: black
-        run: poetry run black --check functional
+      - name: black (Python v${{ matrix.python-version }})
+        run: poetry run black --diff --check functional
         if: always()
-      - name: Test with pytest
+      - name: Test with pytest (Python v${{ matrix.python-version }})
         run: poetry run pytest --cov=functional --cov-report=xml
         if: always()
-      - name: mypy
+      - name: mypy (Python v${{ matrix.python-version }})
         run: poetry run mypy functional
         if: always()
       - uses: codecov/codecov-action@v1

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Release 1.6
 
+- Added Python version to GitHub Action workflow job steps and set Black to show required formatting changes
 - Upgraded pre-commit hooks (pre-commit-hooks to `v5.0.0` and ruff-pre-commit to `v0.6.0`)
 - Added [run-test.sh](run-tests.sh) script that runs all checks on code
 - Added support for Python 3.12 and 3.13 by upgrading Pylint and disabling/fixing Pylint errors