new migration helpers for marginal cases #190

	name: test
	on: push
	jobs:
	golangci:
	name: lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: golangci-lint
	uses: golangci/golangci-lint-action@v2
	with:
	version: latest
	args: --timeout=5m
	test:
	strategy:
	matrix:
	go-version: [1.18.x, 1.19.x, 1.20.x, 1.21.x]
	os: [windows-latest, ubuntu-latest, macos-latest]
	runs-on: ${{ matrix.os }}
	steps:
	- name: setup go
	uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go-version }}
	- name: checkout
	uses: actions/checkout@v2
	- name: test
	run: make test
	test-cov:
	runs-on: ubuntu-latest
	steps:
	- name: setup
	uses: actions/setup-go@v2
	with:
	go-version: 1.19.x
	- name: checkout
	uses: actions/checkout@v2
	- name: test
	run: make test_cov_out
	- name: upload
	uses: codecov/codecov-action@v2
	with:
	files: ./coverage.txt

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