0.2.22 (July 20, 2020)

Fixes
- docs: misc improvements (tokio-rs#2572, tokio-rs#2658, tokio-rs#2663, tokio-rs#2656, tokio-rs#2647, tokio-rs#2630, tokio-rs#2487, tokio-rs#2621,
  tokio-rs#2624, tokio-rs#2600, tokio-rs#2623, tokio-rs#2622, tokio-rs#2577, tokio-rs#2569, tokio-rs#2589, tokio-rs#2575, tokio-rs#2540, tokio-rs#2564, tokio-rs#2567,
  tokio-rs#2520, tokio-rs#2521, tokio-rs#2493)
- rt: allow calls to `block_on` inside calls to `block_in_place` that are
  themselves inside `block_on` (tokio-rs#2645)
- net: fix non-portable behavior when dropping `TcpStream` `OwnedWriteHalf` (tokio-rs#2597)
- io: improve stack usage by allocating large buffers on directly on the heap
  (tokio-rs#2634)
- io: fix unsound pin projection in `AsyncReadExt::read_buf` and
  `AsyncWriteExt::write_buf` (tokio-rs#2612)
- io: fix unnecessary zeroing for `AsyncRead` implementors (tokio-rs#2525)
- io: Fix `BufReader` not correctly forwarding `poll_write_buf` (tokio-rs#2654)
- io: fix panic in `AsyncReadExt::read_line` (tokio-rs#2541)

Changes
- coop: returning `Poll::Pending` no longer decrements the task budget (tokio-rs#2549)

Added
- io: little-endian variants of `AsyncReadExt` and `AsyncWriteExt` methods
  (tokio-rs#1915)
- task: add [`tracing`] instrumentation to spawned tasks (tokio-rs#2655)
- sync: allow unsized types in `Mutex` and `RwLock` (via `default` constructors)
  (tokio-rs#2615)
- net: add `ToSocketAddrs` implementation for `&[SocketAddr]` (tokio-rs#2604)
- fs: add `OpenOptionsExt` for `OpenOptions` (tokio-rs#2515)
- fs: add `DirBuilder` (tokio-rs#2524)

[`tracing`]: https://crates.io/crates/tracing

chore: prepare v0.2.21 release (tokio-rs#2530)

chore: prepare v0.2.20 release. (tokio-rs#2458)

chore: prepare v0.2.19 release (tokio-rs#2441)

chore: prepare to release 0.2.18 (tokio-rs#2399)

chore: prepare to release 0.2.17 (tokio-rs#2392)

# 0.2.17 (April 9, 2020)

### Fixes
- rt: bug in work-stealing queue (tokio-rs#2387) 

### Changes 
- rt: threadpool uses logical CPU count instead of physical by default
  (tokio-rs#2391)


Signed-off-by: Eliza Weisman <eliza@buoyant.io>

- sync: fix a regression where `Mutex`, `Semaphore`, and `RwLock` fut…

…ures no

  longer implement `Sync` (tokio-rs#2375)
- fs: fix `fs::copy` not copying file permissions (tokio-rs#2354)

- time: added `deadline` method to `delay_queue::Expired` (tokio-rs#2300)
- io: added `StreamReader` (tokio-rs#2052)

chore: Prepare `0.2.15` release (tokio-rs#2365)

Signed-off-by: Lucio Franco <luciofranco14@gmail.com>

chore: prepare tokio v0.2.14 release (tokio-rs#2356)

chore: prepare v0.2.13 release (tokio-rs#2282)

Includes a quick bug fix