Add "must" functions for tersely asserting function success #6

	name: CI
	on: [pull_request]
	permissions:
	contents: read
	jobs:
	go-versions:
	name: Check Go Versions
	runs-on: ubuntu-latest
	outputs:
	matrix: ${{ steps.versions.outputs.matrix }}
	steps:
	- name: Checkout
	uses: actions/checkout@v2

	- name: Set Go Versions
	uses: arnested/go-version-action@v1
	id: versions

	test:
	runs-on: ubuntu-latest
	needs: go-versions
	strategy:
	fail-fast: false
	matrix:
	go: ${{ fromJSON(needs.go-versions.outputs.matrix) }}
	name: "Build (${{ matrix.go }})"
	steps:
	- name: Checkout
	uses: actions/checkout@v2

	- name: Setup Go
	uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go }}

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

	- name: Test
	run: go test -cover -race ./...

	lint:
	runs-on: ubuntu-latest
	name: "lint"
	continue-on-error: true
	steps:
	- name: Checkout
	uses: actions/checkout@v2

	- name: golangci-lint
	uses: golangci/golangci-lint-action@v2
	with:
	version: latest
	args: --disable-all -E govet

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