# 0.4.12 (February 16, 2022)

### Fixed

- **hedge**, **load**, **retry**: Fix use of `Instant` operations that can panic
  on platforms where `Instant` is not monotonic ([#633])
- Disable `attributes` feature on `tracing` dependency ([#623])
- Remove unused dependencies and dependency features with some feature
  combinations ([#603], [#602])
- **docs**: Fix a typo in the RustDoc for `Buffer` ([#622])

### Changed

- Updated minimum supported Rust version (MSRV) to 1.49.0.
- **hedge**: Updated `hdrhistogram` dependency to v7.0 ([#602])
- Updated `tokio-util` dependency to v0.7 ([#638])

[#633]: https://github.com/tower-rs/tower/pull/633
[#623]: https://github.com/tower-rs/tower/pull/623
[#603]: https://github.com/tower-rs/tower/pull/603
[#602]: https://github.com/tower-rs/tower/pull/602
[#622]: https://github.com/tower-rs/tower/pull/622
[#638]: https://github.com/tower-rs/tower/pull/638

# Tower 0.4.7 (April 27, 2021)

### Added

- **builder**: Add `ServiceBuilder::check_service` to check the request,
    response, and error types of the output service. ([#576])
- **builder**: Add `ServiceBuilder::check_service_clone` to check the
  output service can be cloned. ([#576])

### Fixed

- **spawn_ready**: Abort spawned background tasks when the `SpawnReady`
  service is dropped, fixing a potential task/resource leak (#[581])
- Fixed broken documentation links ([#578])

[#576]: https://github.com/tower-rs/tower/pull/576
[#578]: https://github.com/tower-rs/tower/pull/578
[#581]: https://github.com/tower-rs/tower/pull/581

0.3.1 (January 17, 2020)

- Allow opting out of tracing/log (#410).