Move `UStack` to `ustl` #120

	name: Test with UnitTest

	on:
	push:
	paths:
	- '**.py'
	- '.github/workflows/**'
	- 'requirements.txt'
	branches:
	- main
	pull_request:
	paths:
	- '**.py'
	- '.github/workflows/**'
	- 'requirements.txt'
	branches:
	- main

	permissions:
	contents: read

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python 3.12
	uses: actions/setup-python@v3
	with:
	python-version: "3.12.1"
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	- name: Test with UnitTest
	run: \|
	python -m unittest $(git ls-files 'tests/*.py')

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