Merging upstream version 0.5.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

.github/workflows/tests.yml

@@ -6,7 +6,6 @@ jobs:
     name: ${{ matrix.os }} - ${{ matrix.python-version }}
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
         python-version: ['3.7', '3.8', '3.9', '3.10', 'pypy-3.8']
@@ -33,3 +32,7 @@ jobs:
         run: python -m pip install .[test]
       - name: Launch tests
         run: python -m pytest
+      - name: Check coding style
+        run: python -m flake8
+      - name: Check imports order
+        run: python -m isort . --check --diff