Replace ruamel.yaml with pyyaml #60

	name: Tests and coverage
	on: [pull_request]
	jobs:
	Pytest_Coveralls:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python
	uses: actions/setup-python@master
	with:
	python-version: 3.7
	- run: echo "/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin" >> $GITHUB_PATH
	- name: Install Sambamba
	run: \|
	brew update
	brew install sambamba
	- name: Install repo and its dependencies
	run: \|
	pip install -r requirements.txt
	pip install -r requirements-dev.txt
	pip install -e .
	pip install coveralls
	- name: Run pytest and coveralls
	run: \|
	pytest --cov=chanjo tests/
	coveralls --service=github
	env:
	GITHUB_TOKEN: ${{ github.token }}

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