cbor: decode tags.
cbor: decode tags.

(Partially) fixes #7.

The tag info is currently not retained, but this simple fix to parsing means we can at least consume and decode the rest of a cbor object containing (single-at-a-time) tags.

Signed-off-by: Eric Myhre <2346ad27d7568ba9896f1b7da6b5991251debdf2@exultant.us>

polydawn/refmt,polydawn/refmt,polydawn/go-xlate,polydawn/go-xlate