Add github action. Remvoe CircleCI. #5

	name: CI

	on:
	push:
	branches:
	- master

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: '3.11'
	- run: pip install -r requirements.txt
	- run: make sphinx
	# Publish built docs to gh-pages branch.
	- name: Commit documentation changes
	run: \|
	git clone https://github.com/wdv4758h/notes.git --depth 1 --branch gh-pages --single-branch gh-pages
	rm -rf gh-pages/*
	cp -r _build/html/* gh-pages/
	cd gh-pages
	touch .nojekyll
	git config --local user.email "action@github.com"
	git config --local user.name "GitHub Action"
	git add .
	git commit -m "Update documentation" -a \|\| true
	# The above command will fail if no changes were present, so we ignore that.
	- name: Push changes
	uses: ad-m/github-push-action@master
	with:
	branch: gh-pages
	directory: gh-pages
	github_token: ${{ secrets.GITHUB_TOKEN }}

Provide feedback