Add note about sqrt_hz_at #12

	---
	name: Rust

	on:
	workflow_dispatch:
	push:
	branches:
	- main
	- master
	paths:
	- 'Cargo.toml'
	- 'src/**'
	- '.codespellrc'
	- '.github/workflows/rust.yml'
	pull_request:
	branches:
	- main
	- master
	paths:
	- 'Cargo.toml'
	- 'src/**'
	- '.codespellrc'
	- '.github/workflows/rust.yml'

	env:
	CARGO_TERM_COLOR: always

	jobs:
	codespell:
	name: Check for spelling mistakes
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Codespell
	uses: codespell-project/actions-codespell@v2

	lint:
	name: Lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Check format
	run: cargo fmt --check
	- name: Clippy
	run: cargo clippy --all-features

	docs:
	name: Build documentation
	needs:
	- codespell
	- lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Build documentation
	run: cargo doc --all-features

	build-linux:
	name: Build on Linux
	needs:
	- lint
	runs-on: ubuntu-latest
	strategy:
	matrix:
	features: [ [ ], [ "--all-features" ], [ "--no-default-features" ] ]
	steps:
	- uses: actions/checkout@v4
	- name: Clippy
	run: cargo clippy ${{ join(matrix.features, ' ') }}
	- name: Build
	run: cargo build --verbose ${{ join(matrix.features, ' ') }}
	- name: Run doctests
	run: cargo test --doc --verbose ${{ join(matrix.features, ' ') }}
	- name: Run regular tests
	run: cargo test --tests --verbose ${{ join(matrix.features, ' ') }}

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