Would be great to be able to archive (or hide) calendars that are not useful anymore, while still being able to consult information that was recorded.

For example, I had a calendar for my building's activities, meetings with other tenants, etc. but when I moved, it was not necessary for me to have that calendar in the side bar list (unticked, of course). Would be great to be able to hide this calendar from the list, and still be able to consult when needed.