tracing: prepare to release v0.1.29 (tokio-rs#1623)

# 0.1.29 (October 5th, 2021

This release adds support for recording `Option<T> where T: Value` as
typed `tracing` field values. It also includes significant performance
improvements for functions annotated with the `#[instrument]` attribute
when the generated span is disabled.

### Changed

- `tracing-core`: updated to v0.1.21
- `tracing-attributes`: updated to v0.1.19

### Added

- **field**: `Value` impl for `Option<T> where T: Value` ([tokio-rs#1585])
- **attributes**: - improved performance when skipping
  `#[instrument]`-generated spans below the max level ([tokio-rs#1600], [tokio-rs#1605],
  [tokio-rs#1614], [tokio-rs#1616], [tokio-rs#1617])

### Fixed

- **instrument**: added missing `Future` implementation for
  `WithSubscriber`, making the `WithDispatch` extension trait actually
  useable ([tokio-rs#1602])
- Documentation fixes and improvements ([tokio-rs#1595], [tokio-rs#1601], [tokio-rs#1597])

Thanks to @BrianBurgers, @mattiast, @DCjanus, @oli-obk, and @matklad for
contributing to this release!

[tokio-rs#1585]: tokio-rs#1585
[tokio-rs#1595]: tokio-rs#1596
[tokio-rs#1597]: tokio-rs#1597
[tokio-rs#1600]: tokio-rs#1600
[tokio-rs#1601]: tokio-rs#1601
[tokio-rs#1602]: tokio-rs#1602
[tokio-rs#1605]: tokio-rs#1605
[tokio-rs#1614]: tokio-rs#1614
[tokio-rs#1616]: tokio-rs#1616
[tokio-rs#1617]: tokio-rs#1617

tracing/CHANGELOG.md

@@ -1,3 +1,41 @@
+# 0.1.29 (October 5th, 2021
+
+This release adds support for recording `Option<T> where T: Value` as typed
+`tracing` field values. It also includes significant performance improvements
+for functions annotated with the `#[instrument]` attribute when the generated
+span is disabled.
+
+### Changed
+
+- `tracing-core`: updated to v0.1.21
+- `tracing-attributes`: updated to v0.1.19
+
+### Added
+
+- **field**: `Value` impl for `Option<T> where T: Value` ([#1585])
+- **attributes**: - improved performance when skipping `#[instrument]`-generated
+  spans below the max level ([#1600], [#1605], [#1614], [#1616], [#1617])
+
+### Fixed
+
+- **instrument**: added missing `Future` implementation for `WithSubscriber`,
+  making the `WithDispatch` extension trait actually useable ([#1602])
+- Documentation fixes and improvements ([#1595], [#1601], [#1597])
+
+Thanks to @brianburgers, @mattiast, @DCjanus, @oli-obk, and @matklad for
+contributing to this release!
+
+[#1585]: https://github.com/tokio-rs/tracing/pull/1585
+[#1595]: https://github.com/tokio-rs/tracing/pull/1596
+[#1597]: https://github.com/tokio-rs/tracing/pull/1597
+[#1600]: https://github.com/tokio-rs/tracing/pull/1600
+[#1601]: https://github.com/tokio-rs/tracing/pull/1601
+[#1602]: https://github.com/tokio-rs/tracing/pull/1602
+[#1605]: https://github.com/tokio-rs/tracing/pull/1605
+[#1614]: https://github.com/tokio-rs/tracing/pull/1614
+[#1616]: https://github.com/tokio-rs/tracing/pull/1616
+[#1617]: https://github.com/tokio-rs/tracing/pull/1617
+
 # 0.1.28 (September 17th, 2021)
 
 This release fixes an issue where the RustDoc documentation was rendered

tracing/README.md

@@ -250,7 +250,7 @@ my_future
 is as long as the future's.
 
 The second, and preferred, option is through the
-[`#[instrument]`](https://docs.rs/tracing/0.1.28/tracing/attr.instrument.html)
+[`#[instrument]`](https://docs.rs/tracing/0.1.29/tracing/attr.instrument.html)
 attribute:
 
 ```rust
@@ -297,7 +297,7 @@ span.in_scope(|| {
 // Dropping the span will close it, indicating that it has ended.
 ```
 
-The [`#[instrument]`](https://docs.rs/tracing/0.1.28/tracing/attr.instrument.html) attribute macro
+The [`#[instrument]`](https://docs.rs/tracing/0.1.29/tracing/attr.instrument.html) attribute macro
 can reduce some of this boilerplate:
 
 ```rust