Replace Travis with Github actions

.github/workflows/test.yml

@@ -0,0 +1,30 @@
+name: Test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version:
+          - 3.4
+          - 3.5
+          - 3.6
+          - 3.7
+          - 3.8
+          - 3.9
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install 'setuptools>=18.5,<=39.0.0'
+          python -m pip install -r test-requirements.txt
+      - name: Run tests
+        run: |
+          python setup.py nosetests --verbosity=3

.travis.yml

@@ -1,9 +0,0 @@
-language: python
-python:
-    - 3.6
-
-install:
-    - pip install 'setuptools>=18.5,<=39.0.0'
-    - pip install -r test-requirements.txt
-
-script: python3 setup.py nosetests --verbosity=3