feat: add `stretch` option #190

	name: Run tests
	on: [push, pull_request]
	jobs:
	unit:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/[email protected]
	with:
	node-version: 14.15.4
	- name: install
	run: npm install
	- name: lint
	run: npm run lint
	- name: test
	run: npm run coverage
	- name: Coveralls GitHub Action
	uses: coverallsapp/[email protected]
	with:
	github-token: ${{ secrets.GITHUB_TOKEN }}
	# e2e:
	# runs-on: ubuntu-latest
	# steps:
	# - uses: actions/checkout@v2
	# - uses: actions/[email protected]
	# with:
	# node-version: 14.15.4
	# - uses: microsoft/[email protected]
	# - run: npm install
	# - name: install packages
	# run: npm run e2e:pre-install
	# - name: build grid
	# run: npm run e2e:pre-build
	# - name: run tests
	# run: npm run e2e:headless
	# - name: Archive logs
	# if: ${{ failure() }}
	# uses: actions/upload-artifact@v2
	# with:
	# name: e2e log
	# path: test/e2e/log

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