Add github actions to the repo

Add yaml for the new CI (github actions).

.github/workflows/python_actions.yml

@@ -0,0 +1,28 @@
+name: Python CI actions
+
+on: [pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    env:
+      COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade setuptools pip
+        pip install -U -r requirements.txt
+        pip install -U -r dev-requirements.txt
+
+    - name: Test with pytest
+      run: |
+        pytest
+
+    - run: coveralls