Adding upstream version 4.6.0+dfsg.

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

.github/workflows/pythonpackage.yml

@@ -0,0 +1,38 @@
+name: Python package
+
+on: [workflow_dispatch, pull_request]
+
+jobs:
+  python-check:
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        platform: [ubuntu-20.04, macos-latest, windows-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install -U pip poetry poethepoet
+          poetry --version
+          poetry install --only main,linters,test
+      - name: Run tests and linters
+        run: |
+          git config --global user.email "action@github.com"
+          git config --global user.name "GitHub Action"
+          poetry ci
+        shell: bash
+      - name: Upload coverage to Codecov
+        if: runner.os == 'Linux'
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage.xml
+          flags: unittests
+          name: codecov-umbrella