Use Github Actions to release

.github/workflows/release.yml

@@ -0,0 +1,31 @@
+name: Release process
+# Releases on Pypi when a version tag is pushed.
+
+on:
+  push:
+    tags:
+      - '*'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.x"
+      - name: Install build
+        run: "python3 -m pip install build --user"
+      - name: Build a binary wheel and a source tarball
+        run: "python3 -m build --sdist --wheel --outdir dist/"
+      - name: Publish to PyPI
+        if: startsWith(github.ref, 'refs/tags')
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+        password: ${{ secrets.PYPI_API_TOKEN_IMPORT_LINTER }}