Add black and isort to toolchain

Signed-off-by: Thomas Scholtes <geigerzaehler@axiom.fm>

.flake8

@@ -0,0 +1,3 @@
+[flake8]
+max-line-length = 88
+extend-ignore = E203

.github/workflows/main.yaml

@@ -14,6 +14,8 @@ jobs:
         python-version: 3.8
         cache: poetry
     - run: poetry install
+    - run: poetry run black --check .
+    - run: poetry run isort --check .
     - run: poetry run flake8
     - run: poetry run pytest
     - uses: coverallsapp/github-action@v2

DEVELOPING.md

@@ -4,6 +4,8 @@ This project uses [Poetry][] for packaging and dependency management.
 
 We’re using the following tools to ensure consistency and quality
 
+- [black](https://github.com/psf/black)
+- [isort](https://github.com/PyCQA/isort)
 - [flake8](https://github.com/PyCQA/flake8)
 - [pytest](https://docs.pytest.org/)
 

beetsplug/__init__.py

@@ -1,2 +1,3 @@
 from pkgutil import extend_path
+
 __path__ = extend_path(__path__, __name__)