closes #255 matplotlib histogram of nearest neighbor energies #233

	# 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: Run Unit Tests

	on: pull_request

	jobs:
	build:

	runs-on: ubuntu-20.04
	container:
	image: unhumbleben/nupack:latest
	strategy:
	matrix:
	python-version: [ 3.7, 3.8, 3.9 ]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}
	- name: Upgrade pip
	run: python -m pip install --upgrade pip
	- name: Install NUPACK
	run: \|
	python -m pip install -U nupack -f /nupack/package
	- name: Install dependencies
	run: \|
	if [ -f requirements.txt ]; then python -m pip install -r requirements.txt; fi
	- name: Test with unittest
	run: \|
	python -m unittest -v tests/test.py

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