1.5.0 (April 12, 2021)

Added

• io: add AsyncSeekExt::stream_position (#3650)
• io: add AsyncWriteExt::write_vectored (#3678)
• io: add a copy_bidirectional utility (#3572)
• net: implement IntoRawFd for TcpSocket (#3684)
• sync: add OnceCell (#3591)
• sync: add OwnedRwLockReadGuard and OwnedRwLockWriteGuard (#3340)
• sync: add Semaphore::is_closed (#3673)
• sync: add mpsc::Sender::capacity (#3690)
• sync: allow configuring RwLock max reads (#3644)
• task: add sync_scope for LocalKey (#3612)

Fixed

• chore: try to avoid noalias attributes on intrusive linked list (#3654)
• rt: fix panic in JoinHandle::abort() when called from other threads (#3672)
• sync: don't panic in oneshot::try_recv (#3674)
• sync: fix notifications getting dropped on receiver drop (#3652)
• sync: fix Semaphore permit overflow calculation (#3644)

Documented

• io: clarify requirements of AsyncFd (#3635)
• runtime: fix unclear docs for {Handle,Runtime}::block_on (#3628)
• sync: document that Semaphore is fair (#3693)
• sync: improve doc on blocking mutex (#3645)