Lint

Add go 1.20 to test workflow #14

	name: Lint
	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	lint:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-go@v5
	with:
	go-version: stable

	- name: Verify formatting
	run: gofmt -s -w . && git diff --exit-code

	- name: Run go vet
	run: go vet ./...

	- name: Verify tidy modules
	run: go mod tidy && git diff --exit-code

	- name: Verify dependencies
	run: go mod download && go mod verify

	- name: Run linter
	uses: golangci/golangci-lint-action@v4
	with:
	version: latest

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