Added from_foyer classmethod to Topology class. #369

	# 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: Test

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master, devel ]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	os: [ubuntu-latest, macOS-latest]
	python-version: [3.7, 3.8]

	steps:
	- uses: actions/checkout@v2

	- uses: conda-incubator/setup-miniconda@v2
	name: Conda setup
	with:
	python-version: ${{ matrix.python-version }}
	activate-environment: standard
	environment-file: devtools/envs/standard.yaml
	auto-activate-base: false

	- name: Environment Information
	shell: bash -l {0}
	run: \|
	conda info
	conda list

	- name: Install peleffy
	shell: bash -l {0}
	run: \|
	python -m pip install --no-deps -v .

	- name: Lint with flake8
	shell: bash -l {0}
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

	- name: Test with pytest
	shell: bash -l {0}
	run: \|
	pytest -r fE --tb=short --cov=peleffy --cov-config=setup.cfg peleffy/

	- name: Codecov
	shell: bash -l {0}
	run: \|
	codecov --token=${{ secrets.CODECOV_TOKEN }}

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