c0c68f98d3
automatically canceled when the omgr is shutdown (they actually cancel themselves if they fire after the omgr has been shutdown, which stock intervals also do, but these guys do so quietly because we know they mean to work that way). Made use of that new method and the fluent schedule methods in various places. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5880 542714f4-19e9-0310-aa3c-eee0fc999fb1