• Improved buffering performance of SplitSink (#1969)
• Added select_biased! macro (#1976)
• Added hash_receiver method to mpsc channel (#1962)
• Added stream::try_unfold (#1977)
• Fixed bug with zero-size buffers in vectored IO (#1998)
• AtomicWaker::new() is now const fn (#2007)
• Fixed bug between threadpool and user park/unparking (#2010)
• Added stream::Peakable::peek (#2021)
• Added StreamExt::scan (#2044)
• Added impl of AsyncRead/Write for BufReader/Writer (#2033)
• Added impl of Spawn and LocalSpawn for Arc<impl Spawn and Rc<impl Spawn> (#2039)
• Fixed Sync issues with FuturesUnordered (#2054)
• Added into_inner method for future::Ready (#2055)
• Added MappedMutexGuard API (#2056)
• Mitigated starvation issues in FuturesUnordered (#2049)
• Added TryFutureExt::map_ok_or_else (#2058)