improv-Add a missing dependency in README #811

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: Unittests

	on:
	push:
	branches:
	- master
	- main
	- '[0-9]+.[0-9]+'
	- '[0-9]+.[0-9]+.[0-9]+'
	pull_request:

	jobs:
	unittests:
	runs-on: windows-latest
	strategy:
	matrix:
	python-version: ['3.9']

	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 -e .
	- name: Test with unittest
	run: python -m unittest discover -v -s tests

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