Prepare v0.3.0.rc1 with new release workflow

.github/workflows/main.yml

@@ -3,9 +3,9 @@ name: CI
 
 on:
   push:
-    branches: [ "master", "v*" ]
+    branches: [ "main", "v*" ]
   pull_request:
-    branches: [ "master", "v*" ]
+    branches: [ "main", "v*" ]
   workflow_dispatch:
 
 permissions:

.github/workflows/pypi.yml

@@ -0,0 +1,57 @@
+---
+name: Build and upload to PyPI
+
+permissions:
+  contents: read
+
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: tag to build
+        required: true
+        type: string
+      testpypi:
+        description: upload to Test PyPI
+        type: boolean
+        default: false
+      pypi:
+        description: upload to PyPI
+        type: boolean
+        default: false
+
+jobs:
+  tests:
+    uses: /.github/workflows/main.yml
+  pypi:
+    name: Build and upload to PyPI
+    runs-on: ubuntu-latest
+    needs: tests
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ inputs.tag || github.ref }}
+      - name: Set up Python 3.10
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+      - name: "Update pip"
+        run: python -m pip install --upgrade pip setuptools wheel
+      - name: "Install 'build' and 'twine'"
+        run: python -m pip install --upgrade build twine
+      - name: "Run 'build'"
+        run: "python -m build"
+      - name: "Run twine check"
+        run: "python -m twine check dist/*"
+      - name: Publish distribution to Test PyPI
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          password: ${{ secrets.TEST_PYPI_API_TOKEN }}
+          repository_url: https://test.pypi.org/legacy/
+        if: inputs.testpypi || false
+      - name: Publish distribution to PyPI
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}
+        if: inputs.pypi || false