feat: upgrade syn to 2.0 #9

	name: CI

	on:
	pull_request:
	branches:
	- '*'

	jobs:
	fmt:
	name: Rustfmt
	runs-on: ubuntu-latest

	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- run: rustup component add clippy

	- name: Run rustfmt
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all -- --check

	clippy:
	name: Clippy
	runs-on: ubuntu-latest

	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- run: rustup component add clippy

	- name: Run clippy
	uses: actions-rs/clippy-check@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	args: -- -D warnings

	deadlinks:
	name: Deadlinks
	runs-on: ubuntu-latest

	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- name: Install rust
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	profile: minimal
	override: true

	- name: Install deadlinks
	run: cargo install cargo-deadlinks

	- name: Cargo doc
	run: cargo doc --no-deps

	- name: Run deadlinks
	run: cargo deadlinks --dir target/doc

	test:
	name: Test
	runs-on: ubuntu-latest

	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- run: rustup component add clippy

	- name: Build
	uses: actions-rs/cargo@v1
	with:
	command: build
	args: --examples --all

	- name: Test
	uses: actions-rs/cargo@v1
	with:
	command: test
	args: --all

Provide feedback