Replace travis with GH actions (#1)

.github/workflows/python-package.yml

@@ -0,0 +1,33 @@
+---
+name: Python package
+
+on:
+  push:
+    branches: [ "stable" ]
+  pull_request:
+    branches: [ "stable" ]
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.7", "3.9", "3.11"]
+
+    steps:
+    - uses: actions/checkout@v4
+    - 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 --upgrade pip wheel
+        python -m pip install --requirement test-requirements.txt
+        python -m pip install --editable .[tests]
+    - name: Lint with pylint and pyflakes
+      run: |
+        pylint --errors-only spreadflow_confviz
+        pyflakes spreadflow_confviz