create hash_abs function to return absolute value of a hash value #457

	name: Build and Test

	# Controls when the action will run. Triggers the workflow on push or pull request
	# events but only for the master branch
	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build_and_test:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: '3.10'

	- name: pre-commit
	run: make run-pre-commit

	# setup and install everything and run tests
	- name: up
	run: make up
	- name: tests
	run: make tests

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