The highest tagged major version is v3.

common

module

v1.9.2 Latest Latest Go to latest Published: Jan 22, 2019 License: UNKNOWN not legal advice

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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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