Fix various minor issues on macOS and add a CI workflow for this OS #1

	name: Code Quality (rustfmt and clippy)
	on: [pull_request, create]

	jobs:
	build:
	if: github.event_name == 'pull_request'
	name: Code Quality (clippy, rustfmt)
	runs-on: ubuntu-latest
	strategy:
	matrix:
	rust:
	- stable
	target:
	- aarch64-apple-darwin
	steps:
	- name: Code checkout
	uses: actions/checkout@v2
	- name: Install Rust toolchain (${{ matrix.rust }})
	uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	target: ${{ matrix.target }}
	override: true
	components: rustfmt, clippy

	- name: Create a fake init
	run: touch init/init

	- name: Formatting (rustfmt)
	run: cargo fmt -- --check

	- name: Clippy (default features)
	run: cargo clippy -- -D warnings

	- name: Clippy (net feature)
	run: cargo clippy --features net -- -D warnings

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