Adding upstream version 6.0.4.

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

.github/workflows/python-package.yml

@@ -0,0 +1,26 @@
+name: Test and Lint Python Package
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install -r requirements.txt
+    - name: Run checks (linter, code style, tests)
+      run: |
+        ./run_checks.sh