Switch tests from Travis to GitHub Actions

.github/workflows/python_actions.yml

@@ -0,0 +1,29 @@
+name: GitHub Actions CI
+
+on: [pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade wheel setuptools pip
+        pip install -U -r requirements.txt
+        pip install -U -r dev-requirements.txt
+
+    - name: Test with pytest
+      run: |
+        py.test
+
+    - name: Upload coverage data to coveralls.io
+      run: coveralls
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

dev-requirements.txt

@@ -1,5 +1,5 @@
-coverage==4.5.4
-coveralls==1.8.2
+coverage==5.2.1
+coveralls==2.2.0
 Flask-Testing==0.8.1
 httpretty==0.8.10
 mock==3.0.5