I've just published a new draft of SRFI 134 from John Cowan.

  <http://srfi.schemers.org/srfi-134/>

For ease of reference, the diff is here:

  <https://github.com/scheme-requests-for-implementation/srfi-134/commit/f26ea88a226bceb31a1a4cf94c3579ee58705108>

Regards,

SRFI Editor