Merge pull request #213 from dnephin/ci-go-1.16 ci: add go1.16
A collection of packages to augment testing and support common patterns.
With Go modules enabled (go1.11+)
$ go get gotest.tools/v3
import "gotest.tools/v3/assert"
To use gotest.tools with an older version of Go that does not understand Go module paths pin to version v2.3.0.
timeSee CONTRIBUTING.md.