Added vector_to_formula class method #39

	name: Install locally with pip and test via Pytest

	on:
	push:
	paths:
	- '**.py' # only run workflow when source files changed

	jobs:
	linux-pytest:
	runs-on: ubuntu-latest
	strategy:
	max-parallel: 5

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.7
	uses: actions/setup-python@v2
	with:
	python-version: '3.7'

	- name: Upgrade pip
	shell: bash -l {0}
	run: \|
	python -m pip install --upgrade pip

	- name: Install dependencies
	shell: bash -l {0}
	run: \|
	pip install pytest flit
	flit install

	- name: Test with pytest
	shell: bash -l {0}
	run: \|
	python -m pytest

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