Update to regex-automata v0.4 (#5) #6

	name: CI

	on: [push]

	jobs:
	check:
	name: check
	runs-on: ubuntu-latest
	strategy:
	matrix:
	rust:
	- stable
	- nightly
	steps:
	- uses: actions/checkout@master
	- name: Install toolchain
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: ${{ matrix.rust }}
	override: true
	- name: Cargo check
	uses: actions-rs/cargo@v1
	with:
	command: check
	args: --all-features

	test:
	name: Tests
	runs-on: ubuntu-latest
	needs: check

	steps:
	- uses: actions/checkout@master

	- name: Install toolchain
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: nightly
	override: true
	- name: Run tests
	uses: actions-rs/cargo@v1
	with:
	command: test
	- name: Run tests (unicode)
	uses: actions-rs/cargo@v1
	with:
	command: test
	args: --features unicode

	clippy_check:
	runs-on: ubuntu-latest
	needs: check

	steps:
	- uses: actions/checkout@v2
	- name: Install toolchain
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: stable
	components: clippy
	override: true
	- name: Run clippy
	uses: actions-rs/clippy-check@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	args: --all-features

	rustfmt:
	name: rustfmt
	runs-on: ubuntu-latest
	needs: check

	steps:
	- uses: actions/checkout@v2
	- name: Install toolchain
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: stable
	components: rustfmt
	override: true
	- name: Run rustfmt
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: -- --check

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