Support for datetime ranges

Indeed it doesn't seem to work for me either.
Not sure what is not working.

Actually, it is working but on the dev branch.

The last release says that it is Drupal 10 compatible but it actually isn't since it doesn't contain that commit:
https://git.drupalcode.org/project/datetimehideseconds/-/commit/e0c08ef5...

That would be nice to create a new release quickly to avoid the loss of time for the next developer that encounter this issue.

It works fine with core datetime range fields.