Add deploy workflow

Author: waylan

.github/workflows/deploy.yml

@@ -0,0 +1,53 @@
+name: deploy
+
+on:
+  push:
+    tags:
+    - '*'
+
+jobs:
+
+  pypi:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Python
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip setuptools wheel
+      - name: Build
+        run: |
+          python setup.py bdist_wheel sdist --formats gztar
+      - name: Publish
+        uses: pypa/gh-action-pypi-publish@v1.1.0
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_PASSWORD }}
+
+  ghpages:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:  # Allow push to org repo
+          persist-credentials: false
+      - name: Setup Python
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip setuptools
+          python -m pip install -r doc-requirements.txt
+      - name: Build
+        run: |
+          python -m mkdocs build --clean --verbose
+      - name: Publish
+        uses: JamesIves/github-pages-deploy-action@releases/v3
+        with:
+          ACCESS_TOKEN: ${{ secrets.GHPAGES_TOKEN }}
+          REPOSITORY_NAME: Python-Markdown/Python-Markdown.github.io
+          BRANCH: master
+          FOLDER: site