tower v0.5.2

Prepare release of v0.5.1 (tower-rs#791)

tower-layer: drop versions from dev dependencies (tower-rs#782)

tower-layer: drop versions from dev dependencies (tower-rs#782)

chore: prepare to release tower-0.5.0, tower-layer-0.3.3, tower-servi…

…ce-0.3.3, and tower-test-0.4.1 (tower-rs#781)

chore: prepare to release tower-layer v0.3.2 (tower-rs#699)

chore: prepare to release `tower-service` v0.3.2 (tower-rs#673)

# 0.3.2 (June 17, 2022)

## Added

- **docs**: Clarify subtlety around cloning and readiness in the
  `Service` docs ([tower-rs#548])
- **docs**: Clarify details around shared resource consumption in
  `poll_ready()` ([tower-rs#662])

[tower-rs#548]: tower-rs#548
[tower-rs#662]: tower-rs#662

chore: prepare to release `tower-service` v0.3.2 (tower-rs#673)

# 0.3.2 (June 17, 2022)

## Added

- **docs**: Clarify subtlety around cloning and readiness in the
  `Service` docs ([tower-rs#548])
- **docs**: Clarify details around shared resource consumption in
  `poll_ready()` ([tower-rs#662])

[tower-rs#548]: tower-rs#548
[tower-rs#662]: tower-rs#662

# 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 ([tower-rs#633])
- Disable `attributes` feature on `tracing` dependency ([tower-rs#623])
- Remove unused dependencies and dependency features with some feature
  combinations ([tower-rs#603], [tower-rs#602])
- **docs**: Fix a typo in the RustDoc for `Buffer` ([tower-rs#622])

### Changed

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

[tower-rs#633]: tower-rs#633
[tower-rs#623]: tower-rs#623
[tower-rs#603]: tower-rs#603
[tower-rs#602]: tower-rs#602
[tower-rs#622]: tower-rs#622
[tower-rs#638]: tower-rs#638

tower: prepare to release 0.4.11 (tower-rs#618)

* tower: prepare to release 0.4.11

Added

- **util**: Add `CloneBoxService` which is a `Clone + Send` boxed `Service` ([tower-rs#615])
- **util**: Add `ServiceExt::boxed` and `ServiceExt::clone_boxed` for applying the
  `BoxService` and `CloneBoxService` middleware ([tower-rs#616])
- **builder**: Add `ServiceBuilder::boxed` and `ServiceBuilder::clone_boxed` for
  applying `BoxService` and `CloneBoxService` layers ([tower-rs#616])

Fixed

- **balance**: Remove redundant `Req: Clone` bound from `Clone` impls
  for `MakeBalance`, and `MakeBalanceLayer` ([tower-rs#607])
- **balance**: Remove redundant `Req: Debug` bound from `Debug` impls
  for `MakeBalance`, `MakeFuture`, `Balance`, and `Pool` ([tower-rs#607])
- **ready-cache**: Remove redundant `Req: Debug` bound from `Debug` impl
  for `ReadyCache` ([tower-rs#607])
- **steer**: Remove redundant `Req: Debug` bound from `Debug` impl
  for `Steer` ([tower-rs#607])
- **util**: Remove redundant `F: Clone` bound
  from `ServiceExt::map_request` ([tower-rs#607])
- **docs**: Fix `doc(cfg(...))` attributes
  of `PeakEwmaDiscover`, and `PendingRequestsDiscover` ([tower-rs#610])
- **util**: Remove unnecessary `Debug` bounds from `impl Debug for BoxService` ([tower-rs#617])
- **util**: Remove unnecessary `Debug` bounds from `impl Debug for UnsyncBoxService` ([tower-rs#617])

[tower-rs#607]: tower-rs#607
[tower-rs#610]: tower-rs#610
[tower-rs#616]: tower-rs#616
[tower-rs#617]: tower-rs#617
[tower-rs#615]: tower-rs#615

* sorting

* Rename `CloneBoxService` to `BoxCloneService`

* formatting

* also update changelog