添加保存过程中产生的数据文件到github action cache选项，顺便重新整理了一下github aciton workflow #530

	name: CI

	on: [push, pull_request]

	jobs:
	lint_and_test:
	runs-on: ubuntu-latest
	strategy:
	max-parallel: 4
	matrix:
	python-version: ['3.8', '3.9', '3.10']
	steps:
	- uses: actions/checkout@v3

	- name: Set up Python ${{ matrix.python-version }}
	id: setup_python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip'
	cache-dependency-path: 'requirements-dev.txt'

	- name: Install dependencies
	run: \|
	pip install -r requirements-dev.txt

	- name: Check formatting (black)
	run: black . --check

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