Add `factorial` and more #175

	---
	name: Create a Source Distribution
	on:
	push:
	branches: ["main", "develop"]
	paths:
	- "**.cpp"
	- "**.hpp"
	- "**.py"

	pull_request:
	branches: ["main"]
	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	cache: 'pip'
	python-version: ${{ matrix.python_version }}

	- name: Install dependencies
	run: pip install .
	shell: bash

	- name: Python Build
	run: python setup.py sdist

	- name: Upload SDist Artifact
	uses: actions/[email protected]
	with:
	# Artifact name
	name: sdist
	# A file, directory or wildcard pattern that describes what to upload
	path: ${{ github.workspace }}/dist

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