Offering to co-maintain Date Group

As a side note, since this project is covered by security advisory policy, site moderators will not add as co-maintainers/maintainers people who cannot opt projects into security advisory coverage. If this issue were moved to the Drupal.org project ownership queue, it would be moved back to this issue queue.

Only the project maintainers will add as co-maintainers/maintainers people who cannot opt projects into security advisory coverage, at their discretion.