ci: allow pytest to be missing but not other deps #52

	---
	name: build-and-test
	on: [push, release]
	jobs:
	test-source-install:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up Python 3.8
	uses: actions/setup-python@v2
	with:
	python-version: 3.8
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	- name: Install package from source
	run: pip install -e .
	- name: Test package from source
	run: \|
	python -c "import paperscraper"
	python -m pytest -sv paperscraper
	verify-current-pypi-install:
	runs-on: ubuntu-latest
	steps:
	- name: Set up Python 3.8
	uses: actions/setup-python@v2
	with:
	python-version: 3.8
	- name: Install package from PyPI
	run: \|
	python -m pip install --upgrade pip
	pip install paperscraper
	pip install pytest
	- name: Test package from PyPI
	run: \|
	python -c "import paperscraper"
	python -m pytest -sv paperscraper

Provide feedback