switch from travis to github actions

.github/workflows/main.yml

@@ -0,0 +1,41 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.5]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: libddb
+      run: |
+        sudo apt-get install libdb-dev
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Cache pip
+      uses: actions/cache@v2
+      with:
+         path: ~/.cache/pip
+         key: ${{ runner.os}}-pip-${{ hashFiles('tests/requirements-test.txt') }}
+         restore-keys: |
+           ${{  runner.os}}-pip-
+           ${{ runner.os}}-
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r tests/requirements-test.txt
+    - name: Test with pytest
+      run: |
+        pytest

tests/requirements-test.txt

@@ -0,0 +1,3 @@
+-r ../requirements.txt
+mock
+pytest