Redmine

(I was not sure about posting this here or to the open discussion, but as I'd like input from the other devs, I decided to put it here)

I've been working a little bit with the calendar stuff the last few days to provide an ical/ics view for integration to a calendaring software and I've been thinking that it's a pity only issues and versions show up there. What do you think about opening it up to anything that would want to be shown on a calendar, with a mechanism a little akin to the activity viewer, while still retaining the custom queries (parts of which could be used to filter other stuff than issues where relevant)? One could then e.g. a webcal feed with a certain custom query and only the "calendar event providers" he wants.