[boost] [date_time] quarters as new durations?

Hi, I am happily using the boost date_time library and I plan to extend it towards including quarters as new (gregorian) date durations, just the way months are included already (excluding parsing of quarters) Now my question: What are the chances that his change might make it into the boost date_time library? Is there some interest in this feature, if so I would provide a patch to update source and documentation to include the quarters as a new duration. Please let me know, Kind regards Thomas Lemm