add benchmarks, improve async #73

	name: coverage
	on:
	push:
	tags:
	- v*
	branches:
	- master
	- main
	pull_request:
	permissions:
	contents: read
	# Optional: allow read access to pull request. Use with `only-new-issues` option.
	# pull-requests: read
	jobs:
	codecov:
	name: publish
	runs-on: ubuntu-latest
	steps:

	- name: Set up Go 1.13
	uses: actions/setup-go@v1
	with:
	go-version: '1.13'
	id: go

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

	- name: Get dependencies
	run: \|
	go get -v -t -d ./...
	if [ -f Gopkg.toml ]; then
	curl https://raw.githubusercontent.com/golang/dep/master/install.sh \| sh
	dep ensure
	fi

	- name: Generate coverage report
	run: \|
	go test `go list ./... \| grep -v examples` -coverprofile=coverage.txt -covermode=atomic

	- name: Upload coverage report
	uses: codecov/[email protected]
	with:
	token: 2b901472-ebb4-4b88-8774-55d7597a03f9
	file: ./coverage.txt
	flags: unittests
	name: codecov-umbrella

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