Please tag and release this, so we can easily use it.

[edrandall]

This needs a tag and release version number so that we (who must abide by corporate s/w quality rules) can actually use it.
Even if it's not percieved being ready for "release" (which I doubt) and just something like v0.0.1-alpha.

Yes I realise I can go get github.com/eventials/go-tus@05d0564bb571e81045012756065a8d002d717caf but that isn't really gonna fly.

We need to be able to get and/or reference it in our go.mod file like:

$ go get github.com/eventials/go-tus@v0.0.1-alpha

or
require (
    github.com/eventials/go-tus v0.0.1-alpha
)

Thanks.