Update actions/download-artifact action to v4 #192

	on: [push, pull_request, workflow_dispatch]

	jobs:
	test-rust:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Install Rust
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: stable
	components: clippy, rustfmt

	- name: Lint Rust implementation
	run: cargo clippy

	- name: Check Rust format
	run: cargo fmt --check

	- name: Test Rust implementation
	run: cargo test --all-features

	test-python:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
	steps:
	- uses: actions/checkout@v4

	- name: Install Rust
	uses: dtolnay/rust-toolchain@master
	with:
	toolchain: stable

	- uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- run: pip install maturin
	- run: pip install .

	- name: Test Python implementation
	run: python -m unittest test.py

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