implement precedence and adds tests for correctness #32

	name: Code Styling

	on:
	pull_request:
	paths:
	- "**.py"
	push:
	branches:
	- master
	paths:
	- "**.py"
	workflow_dispatch:
	workflow_call:

	jobs:
	code_style_checking:
	runs-on: ubuntu-latest
	steps:
	- name: Setup Python
	uses: actions/setup-python@v2
	- name: Checkout
	uses: actions/checkout@v2
	with:
	ref: ${{ github.event.pull_request.head.sha }}
	- name: Load cache (if exists)
	uses: actions/cache@v2.1.3
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip
	restore-keys: ${{ runner.os }}-pip
	- name: Install Styling Tools
	run: python -m pip install isort black flake8 pylint
	- name: Run linters
	run: \|
	isort regexfactory --check
	black regexfactory --check
	pylint regexfactory

	type_checking:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	name: Checkout Repo

	- uses: jpetrucciani/mypy-check@master
	with:
	path: regexfactory

Provide feedback