Feature: Use github-workflow instead of travis-ci

.github/workflows/pythonpackage.yml

@@ -0,0 +1,30 @@
+name: Python package
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [3.6, 3.7, 3.8]
+
+    steps:
+    - uses: actions/checkout@v1
+    - 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 pipenv
+        pipenv install --dev --system
+    - name: Lint with flake8
+      run: |
+        make flake8
+    - name: Django test
+      run: |
+        python manage.py test

.travis.yml

@@ -1,16 +0,0 @@
-sudo: false
-dist: trusty
-language: python
-cache:
-    pip: true
-python:
-    - "3.5"
-    - "3.6"
-install:
-    - pip install pipenv && pipenv install --dev --system
-script:
-    - python manage.py test
-    - make flake8
-notifications:
-    email: false
-