code grouming, migration to go1.21 #174

	# ci workflow
	name: ci

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	jobs:
	lint:
	runs-on: ubuntu-latest
	environment:
	name: ci
	steps:
	- name: checkout
	uses: actions/checkout@v3
	- name: setup golang
	uses: actions/setup-go@v4
	with:
	go-version: ^1.21
	check-latest: true
	cache: true
	- name: golangci-lint
	uses: golangci/golangci-lint-action@v3
	- name: goreleaser-check
	uses: goreleaser/goreleaser-action@v4
	with:
	version: latest
	args: check -f .goreleaser.yml
	test:
	runs-on: ubuntu-latest
	environment:
	name: ci
	steps:
	- name: checkout
	uses: actions/checkout@v3
	- name: setup golang
	uses: actions/setup-go@v4
	with:
	go-version: ^1.21
	check-latest: true
	cache: true
	- name: test-coverage
	uses: paambaati/[email protected]
	env:
	CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}
	with:
	coverageCommand: make test
	coverageLocations: ${{ github.workspace }}/cover.out:gocov
	prefix: github.com/${{ github.repository }}
	codeql:
	if: github.event_name == 'push'
	runs-on: ubuntu-latest
	environment:
	name: ci
	steps:
	- name: checkout
	uses: actions/checkout@v3
	- name: setup golang
	uses: actions/setup-go@v4
	with:
	go-version: ^1.21
	check-latest: true
	cache: true
	- name: init codeql
	uses: github/codeql-action/init@v2
	with:
	languages: 'go'
	- name: run analysis
	uses: github/codeql-action/analyze@v2

Provide feedback