Refactor TreeIsomorphism with docs, diagrams, and README update (#1288) #29

	# Use awesome bot to verify that all URLs in the README are valid.
	name: README URL Checker

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: 3.2
	# Disable bundler-cache since we aren't using a Gemfile
	bundler-cache: false

	- name: Install Awesome Bot
	# We install it globally so we don't need bundle exec
	run: gem install awesome_bot

	# TODO: Cache the result of awesome_bot requests, we don't need to check
	# if a link is valid for every commit/PR all the time, we should be able
	# to cache the result for a couple days.
	- name: Run Awesome Bot
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	run: \|
	# Call the command directly
	awesome_bot README.md --allow-dupe --allow-redirect --allow 429

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