Add update instructions to readme #66

	name: "Build and test"

	on:
	pull_request:
	types: [opened, synchronize, reopened]
	workflow_dispatch:
	merge_group:
	push:
	branches:
	- 'main'

	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	runs-on: ubuntu-latest
	env:
	GOPROXY: https://proxy.golang.org/,direct
	GOPRIVATE: ""
	GONOPROXY: ""
	GONOSUMDB: github.com/github/*
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-go@v5
	with:
	go-version: ">=1.22"
	check-latest: true
	- name: Verify go.sum is up to date
	run: \|
	go mod tidy
	git diff --exit-code go.sum
	if [ $? -ne 0 ]; then
	echo "Error: go.sum has changed, please run `go mod tidy` and commit the result"
	exit 1
	fi

	- name: Build program
	run: go build -v ./...

	- name: Run tests
	run: \|
	go version
	go test -race -cover ./...

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