added simple functionality to add noise from micrograph #179

	# GHA workflow for running tests.
	#
	# Largely taken from
	# https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
	# Please check the link for more detailed instructions

	name: Run tests

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.9", "3.10"]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install .
	pip install pytest
	- name: Test with pytest
	run: \|
	pytest tests/

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