Add GitHub CI

.github/workflows/test.yml

@@ -0,0 +1,29 @@
+name: ib_insync
+
+on: [ push, pull_request ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [ 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: |
+          pip install flake8 mypy .
+
+      - name: Static code analysis
+        run: |
+          flake8 ib_insync
+          mypy -p ib_insync
+
+