Move binned type, add tests

streams/src/test/timebin.rs

@@ -2,6 +2,7 @@ use crate::test::runfut;
 use err::Error;
 use futures_util::{stream, StreamExt};
 use items::{sitem_data, RangeCompletableItem, StreamItem};
+use items_0::Empty;
 use items_2::binsdim0::BinsDim0;
 use items_2::channelevents::{ChannelEvents, ConnStatus, ConnStatusEvent};
 use items_2::testgen::make_some_boxed_d0_f32;