Tag semantic version such as v0.1.0 #53

Tagging a semantic version simplifies packaging on Linux, which in turn simpifies packaging applications that depend on this library. Please tag say v0.1.0.

This is a very popular library, but it isn't packaged in many Linux distributions https://repology.org/project/go:github-pkg-browser/versions

• https://docs.fedoraproject.org/en-US/packaging-guidelines/Golang/#_versioning
• https://go-team.pages.debian.net/packaging.html#_version_numbers