Add library code and CI #4

	name: CI
	on: [pull_request]

	env:
	RUST_VERSION: 1.77.2

	jobs:
	test:
	strategy:
	matrix:
	os: [ ubuntu-latest, macos-latest ]

	runs-on: ${{ matrix.os }}

	steps:
	- uses: actions/checkout@v2

	- name: Cache Cargo
	uses: actions/cache@v2
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ matrix.build }}-cargo-${{ hashFiles('Cargo.lock') }}
	restore-keys: \|
	${{ matrix.build }}-cargo-

	- name: Install Rust
	run: \|
	rustup update $RUST_VERSION --no-self-update
	rustup default $RUST_VERSION
	rustup component add rustfmt
	rustup component add clippy

	- name: Check Format
	run: cargo fmt --all -- --check

	- name: Clippy
	run: cargo clippy --tests --benches -- -D clippy::all

	- name: Test
	run: cargo test --all-features -- --test-threads=1
	env:
	RUST_BACKTRACE: 1

	all-checks:
	runs-on: ubuntu-latest
	needs: [test]
	steps:
	- run: echo "checks ok"

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