I've just published draft #8 of SRFI 196. It was submitted by Wolfgang Corcoran-Mathe, author of the SRFI.
Here are Wolfgang's comments on the draft:
These commits adjust the semantics of the vector->range form (now a conversion), and add a few additional constructors and conversions. Due to the late date and the new forms, this should probably be another draft.
Here is the commit summary:
Here's the diff:
https://github.com/scheme-requests-for-implementation/srfi-196/compare/draft-7..draft-8
Regards,
SRFI Editor