0.1.27

doc: make the CBOR connection explicit in the tagline and name (#24)

A reader pointed out that 'boring' does not, on its own, signal CBOR. Put CBOR
in the tagline and own the name-is-the-joke in the first lines -- CBOR is the
boring, standard, universally-readable format, which is the whole point -- so the
connection lands immediately instead of six paragraphs in. Pairs with a repo
description and topics that now say CBOR.