[m-rev.] for review: pretty-printing sparse bitsets

[Zoltan Somogyi]

On Sun, 21 Sep 2025 22:26:22 +1000 (AEST), "Zoltan Somogyi" <zoltan.somogyi at runbox.com> wrote:
> The implementation is straightforward, the review is more for
> how to present the new formatters to users, given that these
> are "lossy" formatters. (They do not print the values in the given set;
> they print only to result of applying the to_uint method to those values.)
> 
> I can see the following ways.

In the absence of replies by then, I intend to commit this diff
around noon tomorrow.

Zoltan.