Add links to leapfrog and flurry as concurrent hash tables examples (… #603

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

	name: CI

	env:
	RUSTFLAGS: -Dwarnings
	RUST_BACKTRACE: 1

	jobs:
	doc-test:
	name: Test code blocks in markdown
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install Rust
	run: rustup update stable

	- name: Build dependencies
	run: RUSTFLAGS="--cfg tokio_unstable" cargo build
	working-directory: doc-test
	continue-on-error: true

	- name: Actually run the tests
	run: RUSTFLAGS="--cfg tokio_unstable" cargo test
	working-directory: doc-test
	tutorial-code:
	name: Test tutorial-code directory
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install Rust
	run: rustup update stable

	- name: Build dependencies
	run: cargo build --all
	working-directory: tutorial-code
	continue-on-error: true

	- name: Actually run the tests
	run: cargo test --all
	working-directory: tutorial-code
	fmt-check:
	name: Verify project code style
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-node@v4
	with:
	node-version: '18'

	- name: Install node dependencies
	run: npm install

	- name: Check formatting
	run: npm run fmt:check

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