Test github action (#454)

chore(ci): add github action (linux only)

.github/workflows/pythonpackage.yml

@@ -0,0 +1,45 @@
+name: Python package
+
+on:
+  pull_request:
+    branches:
+    - master
+    - docs
+  schedule:
+  - cron: "0 2 * * 1-5"
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [3.5, 3.6, 3.7]
+
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        ref: master
+        submodules: true
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install python-dateutil==2.8.0  # botocore caps dateutil leading to issues
+        pip install -vv -e .
+        pip install -r requirements-ml.txt
+    - name: Lint with flake8
+      run: |
+        echo "soon"
+        # pip install flake8
+        # stop the build if there are Python syntax errors or undefined names
+        # flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        # flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Test with pytest
+      run: |
+        pip install pytest
+        pytest tests packages/vaex-core/vaex/test/dataset.py::TestDataset