feat: improve ergonomics of errors and status codes #39

	on:
	push:
	paths:
	- '**.rs'
	- '**.toml'
	- '**.yml'
	- '.git*'
	- 'Cargo.lock'
	- 'README.md' # it's included in the crate root
	branches:
	- main

	name: ci

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: checkout
	uses: actions/checkout@v4
	- name: setup rust toolchain
	id: toolchain
	uses: dtolnay/rust-toolchain@stable
	with:
	toolchain: nightly
	components: rustfmt, clippy
	- name: setup cache
	uses: actions/cache@v4
	with:
	path: \|
	~/.cargo
	target
	key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}-rustc-${{ steps.toolchain.outputs.cachekey }}
	- name: cargo test
	run: cargo test --lib --bins --tests
	- name: cargo fmt
	run: cargo fmt --all -- --check
	- name: cargo clippy
	run: cargo clippy --all-targets --all-features -- -D warnings

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