Add renovate.json #276

	name: Check documentation status

	on: push

	jobs:
	check_docs:
	name: Check whether documentation is up-to-date
	runs-on: ubuntu-20.04

	steps:
	- name: Checkout repository
	uses: actions/checkout@v2

	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.7

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -e .[dev]

	- name: Check docs building
	run: ./docs/res/check.sh

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