The Tagger was introduced in 0296797f0f, as part
of a refactor, but was never used outside of the package itself. The commit
also didn't explain why this was changed into a Type with a constructor, as all
the constructor appears to be used for is to sanitize and validate the tags.
This patch removes the `Tagger` struct and its constructor, and instead just
uses a function to do the same.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
ff81dc3544