Add module to invoke a command with piped stdin and stdout. #517

	name: Linters

	on: [ push, workflow_dispatch ]

	env:
	CARGO_TERM_COLOR: always

	jobs:
	lint:
	name: Lint & Format
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	components: rustfmt, clippy
	override: true
	- name: Cache Cargo
	uses: Swatinem/rust-cache@v1.3.0
	- name: Lint
	uses: actions-rs/cargo@v1
	with:
	command: fix
	args: --all-features
	- name: Format
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	- name: Upload formatting and lint fixes
	run: \|
	if [ -n "$(git status --porcelain)" ]
	then
	git config user.name "Upload lint fixes from CI"
	git config user.email ""
	git add .
	git commit -m "Automatically fix lint failures and format code."
	git push
	fi

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