Add retries to download functions #79

	name: CI
	on: [push, pull_request]
	jobs:
	test:
	name: Run tests
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.6, 3.7, 3.8]
	steps:
	- uses: actions/checkout@v1
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- uses: actions/cache@v2
	name: Cache dependencies
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements_dev.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements_dev.txt
	- name: Run tests
	run: pytest
	- name: Coveralls
	if: matrix.python-version == '3.8'
	run: coveralls --service=github
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	deploy:
	needs: [test]
	if: startsWith(github.ref, 'refs/tags')
	name: Deploy
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@master
	- name: Set up Python 3.7
	uses: actions/setup-python@v1
	with:
	python-version: 3.7
	- name: Install pypa/build
	run: >-
	python -m
	pip install
	build
	--user
	- name: Build a binary wheel and a source tarball
	run: >-
	python -m
	build
	--sdist
	--wheel
	--outdir dist/
	- name: Publish distribution to PyPI
	uses: pypa/gh-action-pypi-publish@master
	with:
	password: ${{ secrets.PYPI_API_TOKEN }}

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