feat(ci): automated pypi release and changelog

.github/workflows/release.yml

@@ -0,0 +1,52 @@
+---
+name: Release
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build-and-publish:
+    name: Publish PyPI package
+    runs-on: ubuntu-l
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.x"
+      - name: Install dependencies
+        run: >-
+          python -m
+          pip install
+          setuptools
+          wheel
+          --user
+      - name: Build wheels
+        run: >-
+          python
+          setup.py
+          sdist
+          bdist_wheel
+          --universal
+      - name: Publish package to pypi.org
+        if: startsWith(github.event.ref, 'refs/tags')
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          user: __token__
+          password: ${{ secrets.pypi_password }}
+
+  release-notes:
+    name: Release Notes
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Generate changelog
+        uses: docker://aevea/release-notary
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}