I've just published draft #12 of SRFI 231. It was submitted by Bradley J. Lucier, author of the SRFI.
Here are Bradley's comments on the draft:
The last push is a correction to the document, so maybe it should be installed before last call is over.
Last call will be over by June 24th.
Here is the commit summary:
Here's the diff:
https://github.com/scheme-requests-for-implementation/srfi-231/compare/draft-11..draft-12
Regards,
SRFI Editor