Refactor argument parsing using newer clap derive #43

	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:
	- x86_64-unknown-linux-gnu
	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: Install asciidoctor
	run: sudo apt-get install -y asciidoctor

	- name: Install additional Rust rust targets
	run: rustup target add aarch64-unknown-linux-gnu aarch64-apple-darwin

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

	- name: Clippy x86_64-unknown-linux-gnu (all features)
	run: cargo clippy --all-features --target x86_64-unknown-linux-gnu

	- name: Clippy aarch64-unknown-linux-gnu (all features)
	run: cargo clippy --all-features --target aarch64-unknown-linux-gnu

	- name: Clippy aarch64-apple-darwin (all features)
	run: cargo clippy --all-features --target aarch64-apple-darwin

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