The highest tagged major version is v2.

source/

Details

Valid go.mod file

The Go module system was introduced in Go 1.11 and is the official dependency management solution for Go.
Redistributable license

Redistributable licenses place minimal restrictions on how software can be used, modified, and redistributed.
Tagged version

Modules with tagged versions give importers more predictable builds.
Stable version

When a project reaches major version v1 it is considered stable.
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Path	Synopsis
configmap Package configmap config is an interface for dynamic configuration.	Package configmap config is an interface for dynamic configuration.
consul
etcd module
grpc
proto Package grpc is a generated protocol buffer package.	Package grpc is a generated protocol buffer package.
mucp module
pkger module
runtimevar package runtimevar is the source for gocloud.dev/runtimevar	package runtimevar is the source for gocloud.dev/runtimevar
url Package url loads changesets from a url	Package url loads changesets from a url
vault