Add GitHub actions (#30)

* Add GitHub actions

* Delete config.yml

* Remove 3.5

Author: rupert

.circleci/config.yml

@@ -0,0 +1,26 @@
+name: Python
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.6, 3.7, 3.8]
+    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 -e .[dev]
+    - name: Lint
+      run: make lint
+    - name: Test
+      run: make test