Proposal: Hardfork selection via flag #439

	on:
	workflow_dispatch:
	push:
	pull_request:

	name: ci

	jobs:
	check:
	name: Check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: nightly
	override: true
	- uses: actions-rs/cargo@v1
	with:
	command: check

	test:
	name: Test Suite
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: nightly
	override: true
	- uses: actions-rs/cargo@v1
	with:
	command: test
	args: --all --all-features
	- uses: peaceiris/actions-mdbook@v1
	with:
	mdbook-version: '0.4.7'
	- run: mdbook test doc -L ./target/debug/deps

	fmt:
	name: Rustfmt
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: stable
	override: true
	- run: rustup component add rustfmt clippy
	- uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all -- --check
	- uses: actions-rs/clippy-check@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	args: --all-features -- --deny warnings

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