Microformat Support - hCalendar

For a paper at my university I would need to add Microformat/hCalendar support (http://microformats.org/wiki/hcalendar) to the Event Module... I got the suggestion to get the changes I made into the CVS here...

For the basic support of hCalendar I had to change a few lines:
in each of theme_event_node_day theme_event_node_week theme_event_node_month theme_event_node_table theme_event_node_list I had to add the tags (divs) to represent the data semantically. Additionally I changed the array returned by event_nodeapi in event.module and added tags there as well.

I think that adding Microformats would be a good thing for that module (as it is for drupal), how should I proceed? I would need someone to review/feedback/accept my changes. (Can I submit it directly, should I attach the changes/diff/etc. here, ....?)

Thanks,
Reinhard