update CI and RTD #101

	name: Tests

	on:
	push:
	branches:
	- main
	pull_request:
	branches-ignore: []
	schedule:
	- cron: '0 0 * * SUN'

	jobs:
	build-linux:
	runs-on: ubuntu-latest
	strategy:
	max-parallel: 5
	matrix:
	python: [3.8, 3.9, '3.10']
	fail-fast: false

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.X
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python }}
	- name: Install the package itself
	run: \|
	pip install poetry
	pip install .
	- name: Test with pytest
	run: \|
	pytest --cov-report term --cov=fitter

	- name: coveralls
	run: \|
	pip install coverage
	coveralls --service=github
	env:
	GITHUB_TOKEN: ${{ github.token }}

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