appender: prepare to release v0.2.1 (tokio-rs#1963)

# 0.2.1 (February 28, 2022)

This release adds an implementation of the `MakeWriter` trait for
`RollingFileAppender`, allowing it to be used without wrapping in a
`NonBlocking` writer.

This release increases the minimum supported Rust version to 1.53.0.

### Added

- **rolling**: Added `MakeWriter` implementation for
  `RollingFileAppender` ([tokio-rs#1760])

### Changed

- Updated minimum supported Rust version (MSRV) to 1.53.0 ([tokio-rs#1851])
- `parking_lot`: updated to v0.12 ([tokio-rs#1878])

### Fixed

- Fixed several documentation typos and issues ([tokio-rs#1780], [d868054],
  [tokio-rs#1943])

[tokio-rs#1760]: tokio-rs#1760
[tokio-rs#1851]: tokio-rs#1851
[tokio-rs#1878]: tokio-rs#1878
[tokio-rs#1943]: tokio-rs#1943
[d868054]: tokio-rs@d868054

chore: add `cargo hack` check to `bin/publish` (tokio-rs#1950)

This adds a check to the `bin/publish` script that the crate being
published builds successfully with all possible feature combinations,
using `cargo hack --feature-powerset`.

This would have prevented tokio-rs#1944.

We test this on CI for most crates in the repo, but it's disabled for some
crates because the powerset is very large, making the check too slow
to run on CI. However, adding it to the publish script will ensure that it's
at least always run before publishing a crate.

subscriber: prepare to release v0.3.9 (tokio-rs#1938)

# 0.3.9 (Feb 17, 2022)

This release updates the minimum supported Rust version (MSRV) to
1.49.0, and updates the (optional) dependency on `parking_lot` to v0.12.

### Changed

- Updated minimum supported Rust version (MSRV) to 1.49.0 ([tokio-rs#1913])
- `parking_lot`: updated to v0.12 ([008339d])

### Added

- **fmt**: Documentation improvements ([tokio-rs#1926], [tokio-rs#1927])

[tokio-rs#1913]: tokio-rs#1913
[tokio-rs#1926]: tokio-rs#1926
[tokio-rs#1927]: tokio-rs#1927
[008339d]: tokio-rs@008339d

tracing: prepare to release v0.1.31 (tokio-rs#1937)

# 0.1.31 (February 17th, 2022)

This release increases the minimum supported Rust version (MSRV) to
1.49.0. In addition, it fixes some relatively rare macro bugs.

### Added

- Added `tracing-forest` to the list of related crates ([tokio-rs#1935])

### Changed

- Updated minimum supported Rust version (MSRV) to 1.49.0 ([tokio-rs#1913])

### Fixed

- Fixed the `warn!` macro incorrectly generating an event with the
  `TRACE` level ([tokio-rs#1930])
- Fixed macro hygiene issues when used in a crate that defines its own
  `concat!` macro, for real this time ([tokio-rs#1918])

Thanks to @QnnOkabayashi, @nicolaasg, and @teohhanhui for contributing
to this release!

[tokio-rs#1935]: tokio-rs#1935
[tokio-rs#1913]: tokio-rs#1913
[tokio-rs#1930]: tokio-rs#1930
[tokio-rs#1918]: tokio-rs#1918

opentelemetry: prepare to release v0.17.1 (tokio-rs#1922)

# 0.17.1 (February 11, 2022)

### Added

- `OpenTelemetryLayer` can now add detailed location information to
  forwarded events (defaults to on) ([tokio-rs#1911])
- `OpenTelemetryLayer::with_event_location` to control whether source
  locations are recorded ([tokio-rs#1911])
### Changed

- Avoid unnecessary allocations to improve performance when recording
  events ([tokio-rs#1917])

Thanks to @djc for contributing to this release!

[tokio-rs#1917]: tokio-rs#1917
[tokio-rs#1911]: tokio-rs#1911

Closes tokio-rs#1919

journald: prepare to release v0.2.3

# 0.2.3 (February 7, 2022)

### Fixed

- Fixed missing `memfd_create` with `glibc` versions < 2.25 ([tokio-rs#1912])

### Changed

- Updated minimum supported Rust version to 1.49.0 ([tokio-rs#1913])

Thanks to @9999years for contributing to this release!

[tokio-rs#1912]: tokio-rs#1912
[tokio-rs#1913]: tokio-rs#1913

subscriber: prepare to release v0.3.8 (tokio-rs#1905)

# 0.3.8 (Feb 4, 2022)

This release adds *experimental* support for recording structured field
values using the [`valuable`] crate to the `format::Json` formatter. In
particular, user-defined types which are recorded using their
[`valuable::Valuable`] implementations will be serialized as JSON
objects, rather than using their `fmt::Debug` representation. See [this
blog post][post] for details on `valuable`.

Note that `valuable` support currently requires `--cfg
tracing_unstable`. See the documentation for details.

Additionally, this release includes a number of other smaller API
improvements.

### Added

- **json**: Experimental support for recording [`valuable`] values as
  structured JSON ([tokio-rs#1862], [tokio-rs#1901])
- **filter**: `Targets::would_enable` method for testing if a `Targets`
  filter would enable a given target ([tokio-rs#1903])
- **fmt**: `map_event_format`, `map_fmt_fields`, and `map_writer`
  methods to `fmt::Layer` and `fmt::SubscriberBuilder` ([tokio-rs#1871])

### Changed

- `tracing-core`: updated to [0.1.22][core-0.1.22]

### Fixed

- Set `smallvec` minimal version to 1.2.0, to fix compilation errors
  with `-Z minimal-versions` ([tokio-rs#1890])
- Minor documentation fixes ([tokio-rs#1902], [tokio-rs#1893])

Thanks to @guswynn, @glts, and @lilyball for contributing to this
release!

[`valuable`]: https://crates.io/crates/valuable
[`valuable::Valuable`]: https://docs.rs/valuable/latest/valuable/trait.Valuable.html
[post]: https://tokio.rs/blog/2021-05-valuable
[core-0.1.22]: https://github.com/tokio-rs/tracing/releases/tag/tracing-core-0.1.22
[tokio-rs#1862]: tokio-rs#1862
[tokio-rs#1901]: tokio-rs#1901
[tokio-rs#1903]: tokio-rs#1903
[tokio-rs#1871]: tokio-rs#1871
[tokio-rs#1890]: tokio-rs#1890
[tokio-rs#1902]: tokio-rs#1902
[tokio-rs#1893]: tokio-rs#1893

serde: prepare to release 0.1.3 (tokio-rs#1904)

# 0.1.3 (February 4, 2022)

This release adds *experimental* support for recording structured field
values using the [`valuable`] crate. See [this blog post][post] for
details on `valuable`.

Note that `valuable` support currently requires `--cfg
tracing_unstable`. See the documentation for details.

### Added

- **valuable**: Experimental support for serializing user-defined types
  using [`valuable`] and [`valuable-serde`] ([tokio-rs#1862])
- Support for serializing `f64` values ([tokio-rs#1507])

### Fixed

- Fixed incorrect size hint in `SerializeFieldSet` ([tokio-rs#1333])
- A number of documentation fixes

Thanks to @akinnane and @maxburke for contributing to this release!

[`valuable`]: https://crates.io/crates/valuable
[`valuable-serde`]: https://crates.io/crates/valuable-serde
[post]: https://tokio.rs/blog/2021-05-valuable
[tokio-rs#1862]: tokio-rs#1862
[tokio-rs#1507]: tokio-rs#1507
[tokio-rs#1333]: tokio-rs#1333

(I also noticed there was a missing changelog entry for v0.1.2, so I
fixed that while I was here)

subscriber: fix outdated formatter docs (tokio-rs#1893)

This fixes outdated statements in the docs for the `Full` and `Compact`
logging formats.

Closes tokio-rs#1880.

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

core: prepare to release v0.1.22 (tokio-rs#1897)

# 0.1.22 (February 3, 2022)

This release adds *experimental* support for recording structured field
values using the [`valuable`] crate. See [this blog post][post] for
details on `valuable`.

Note that `valuable` support currently requires `--cfg
tracing_unstable`. See the documentation for details.

### Added

- **field**: Experimental support for recording field values using the
  [`valuable`] crate ([tokio-rs#1608], [tokio-rs#1888], [tokio-rs#1887])
- **field**: Added `ValueSet::record` method ([tokio-rs#1823])
- **subscriber**: `Default` impl for `NoSubscriber` ([tokio-rs#1785])
- **metadata**: New `Kind::HINT` to support the `enabled!` macro in
  `tracing` ([tokio-rs#1883], [tokio-rs#1891])
### Fixed

- Fixed a number of documentation issues ([tokio-rs#1665], [tokio-rs#1692], [tokio-rs#1737])

Thanks to @xd009642, @Skepfyr, @guswynn, @Folyd, and @mbergkvist for
contributing to this release!

[`valuable`]: https://crates.io/crates/valuable
[post]: https://tokio.rs/blog/2021-05-valuable
[tokio-rs#1608]: tokio-rs#1608
[tokio-rs#1888]: tokio-rs#1888
[tokio-rs#1887]: tokio-rs#1887
[tokio-rs#1823]: tokio-rs#1823
[tokio-rs#1785]: tokio-rs#1785
[tokio-rs#1883]: tokio-rs#1883
[tokio-rs#1891]: tokio-rs#1891
[tokio-rs#1665]: tokio-rs#1665
[tokio-rs#1692]: tokio-rs#1692
[tokio-rs#1737]: tokio-rs#1737