See the documentation in this commit for more information.
This is pretty significant, in that it's been a long-standing question for
me how I'd like to join together `Result` iterators without having
unnecessarily complex APIs, and also allow for error recovery. This solves
both of those problems.
It should be noted, however, that this does not yet explicitly implement
error recovery, beyond being able to observe the failure as the result of
the provided callback function. Proper recovery will be implemented once
there's a use-case.
DEV-11006
Mike Gerwitz