Update docutils requirement from <0.18 to <0.22 #66

	name: pull_requests

	on:
	pull_request:
	branches: main

	jobs:
	docs-build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.7
	uses: actions/setup-python@v2
	with:
	python-version: 3.8
	architecture: x64
	- name: Cache python modules
	uses: actions/cache@v2
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pkg-deps-${{ matrix.python }}-${{ hashFiles('pyproject.toml') }}-docs
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -e .[tf] --upgrade
	pip install -e .[docs]

	- name: Build documentation
	run: cd docs && bash build.sh

	- name: Documentation sanity check
	run: test -e docs/build/index.html \|\| exit

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