Use setup-go@v4 to use stable/oldstable aliases #288

	name: Go
	on: [push, pull_request]
	jobs:

	build:
	name: Build/Test
	runs-on: ${{ matrix.os }}
	timeout-minutes: 3
	strategy:
	matrix:
	go-version: [stable, oldstable]
	os: [ubuntu-latest, windows-latest]

	steps:
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go-version }}
	id: go

	- name: Check out code into the Go module directory
	uses: actions/checkout@v1

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

	- name: Test
	run: go test -v ./... --timeout 60s

	- name: Meta Tests
	run: go test -v -tags ci ./ci --timeout 60s
	if: ${{ runner.os == 'Linux' }}

	- name: Cross test for i386
	run: env GOOS=linux GOARCH=386 go test -v ./... --timeout 60s
	if: ${{ runner.os == 'Linux' }}

	- name: Cross compile for arm (RPI)
	run: env GOOS=linux GOARCH=arm GOARM=5 go build -v ./...
	if: ${{ runner.os == 'Linux' }}

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