Import slog 2.7.0upstream/2.7.0upstream

1 files changed, 289 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..73312c9
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,289 @@
+# Change Log
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/)
+and this project adheres to [Semantic Versioning](http://semver.org/).
+
+## 2.7.0 - 2020-11-29
+
+* Add #% for alternate display of the value part
+* Implement `Eq` for dynamic `Key`s
+* Add `emit_error` to `Serializer`, `#` for serializing foreign errors, and
+  `impl Value for std::io::Error`
+
+## 2.6.0 - 2019-10-28
+
+* Add #? for pretty-debug printing the value part
+
+## 2.5.3 - ????-??-??
+
+* Use fully qualified call syntax for `Logger::log` in macros
+
+## 2.5.2 - 2019-07-22
+
+* Restored parsing of `Level` and `FilterLevel` truncated names
+
+## 2.5.1 - 2019-07-11
+
+* Added parsing of `Level` and `FilterLevel` short names
+
+## 2.5.0 - 2019-07-11
+
+* Added `FilterLevel::accepts`
+* Added `as_str`, `as_short_str` and `Display` to `FilterLevel`
+
+## 2.4.1 - 2018-10-03
+
+* disable support for i128/u128 types if rustc is old
+
+## 2.4.0 - 2018-09-19
+
+* Implement Value for 128 bit integers
+* Add support 2018-style macro imports
+  * **WARNING**: This is a breaking change that we couldn't avoid. Users using
+    explicitly macro import (like `#[macro_use(slog_o)]`) must add
+    `__slog_builtin` to the import list.
+* Bump miminum supported Rust version to 1.26
+
+## 2.3.3 - 2018-07-20
+
+* `impl Value for SocketAddr`
+
+## 2.3.2 - 2018-07-20
+
+* Revert broken changes:
+  * Make `?` and `%` formatters in `kv!` more flexible
+  * Export local inner macros to help with Rust 2018 testing
+
+## 2.3.0 - 2018-07-20
+
+* Export local inner macros to help with Rust 2018 testing
+* Stabilize `Record::new`
+* Make `?` and `%` formatters in `kv!` more flexible
+
+## 2.2.3 - 2018-03-28
+
+* Fix (again) problems introduced by `2.2.1`
+
+## 2.2.2 - 2018-03-26
+
+* Fix problems introduced by `2.2.1`
+
+## 2.2.1 - 2018-03-24
+
+* Add `is_x_enabled()` for queering (imprecise) log-level
+
+## 2.2.0 - 2018-02-13
+### Added
+
+* Support for named format arguments in format messages. They will now become
+  respectively named key-value pairs.
+
+## 2.1.0 - 2017-12-10
+### Added
+
+* Support for nested-values through `emit_serde`, behind `nested-values` feature flag,
+  disabled by default for backward compatibility. **Note**: Consider unstable for the time
+  being.
+* Support for dynamic key (`String` vs `&'static str`), behind `dynamic-keys` feature
+  flag, disabled by default for backward compatibility. **Note**: Consider unstable for
+  the time being.
+
+## 2.0.12 - 2017-09-14
+### Changed
+
+* `#[allow(dead_code)` on unused log statements
+
+## 2.0.11 - 2017-09-13
+### Changed
+
+* Impl `Value` for `std::path::Display`
+
+## 2.0.10 - 2017-09-09
+### Changed
+
+* Remove unnecessary 'static bound on `FnValue`
+
+## 2.0.9 - 2017-08-23
+### Changed
+
+* Update README
+
+## 2.0.6 - 2017-05-27
+### Changed
+
+* Fix for https://github.com/rust-lang/rust/pull/42125
+
+## 2.0.5 - 2017-05-15
+### Changed
+
+* Relicense under MPL/Apache/MIT
+
+## 2.0.4 - 2017-05-05
+### Fixed
+
+* Documentation improvements
+
+## 2.0.3 - 2017-05-05
+### Fixed
+
+* Documentation fixes
+
+## 2.0.2 - 2017-04-12
+### Fixed
+
+* Compile time logging level filtering
+
+## 2.0.0 - 2017-04-11
+### Changed (since v1; bigger picture)
+
+* Unified and simplified logging macros structure and ordering.
+* Added logging Record `tags`.
+* Refactored key-value pairs traits and structures and overall handling.
+  * It's now possible to `impl KV for MyStruct`.
+  * `kv!` can be used to create on stack key-value list.
+  * `KV`-implementing data can appear on the key-value list directly.
+* Support chaining of `OwnedKVList`s. Existing `Logger` can be used as a `Drain`
+  to allow custom handling logic for a part of the logging hierarchy.
+* Added associated `Ok` type to `Drain`.
+* Support for `Drain`s unwind safety.
+* Refactored `Record` to optimize performance on async operations.
+* `slog-extra` has been renamed to `slog-async` since that's the only functionality it contained.
+* `slog-stream` is obsoleted and won't be used in `slog v2` at all. It was a wrong abstraction.
+  `Decorators` functionality was moved to `slog-term`.
+* `slog-term` provides open `Decorator` traits to allow multiple terminal / file writing backends.
+* `slog-term` default `Decorator`s use `term` crate and should work correctly on all supported OSes.
+* `DrainExt` has been removed and utility methods moved directly to `Drain`
+* `slog-stdlog` utilizes `slog-scope` directly.
+* Support for "typed" `Logger`s to allow squeezing last drops of performance possible,
+  at the cost of `T` in `Logger<T>`.
+
+## 2.0.0-3.1 - 2017-03-25
+### Added
+
+* Support for `fmt::Display` values with `%` in `kv!`
+
+
+## 2.0.0-3.0 - 2017-03-25
+### Changed
+
+* Added support for own `KV` and `Value` implementations
+* Streamlined the formatting syntax for `log!` and friends; **BREAKING**
+* Lazy values need explicit `FnValue` wrapper; **BREKING**
+
+### Added
+
+* `kv!` macro
+
+## 2.0.0-2.2 - 2017-03-19
+### Fixes
+
+* Bunch of trait-related fixes
+
+## 2.0.0-2.1 - 2017-03-11
+### Fixed
+
+* Require `MapErr` and `Filter` to be `UnwindSafe`
+
+## 2.0.0-2.0 - 2017-03-11
+### Changed
+
+* Make `Logger::root` return "erased" version
+* Introduce `Logger::root_typed` for "non-erased" `Logger` creation
+
+## 2.0.0-1.0 - 2017-02-23
+
+### Fixed
+
+* `fmt::Debug` for `MutexDrainError`
+
+### Changed
+* Parametrize `Logger` over the `Drain` it holds and introduce "erased" version
+* Enforcing `UnwindSafe` `Drain`s for `Logger`s
+* Refactored key-value pairs traits and structures
+* Renamed some types
+* Support chaining of `OwnedKVList`s
+* Added associated `Ok` type to `Drain`
+* Refactored `Record` to optimize performance on async
+  operations
+* Minimal rustc version required: `1.15.0`
+* `DrainExt` has been removed and utility methods moved directly to `Drain`
+
+### Added
+
+* Macros to create `OwnedKV` and `BorrowedKV`
+* `Logger` implements `Drain`
+
+## 1.5.0 - 2017-01-19
+### Changed
+
+* Order of key-value pairs is now strictly defined
+
+### Added
+
+* `Logger` implements `Drain`
+
+### Deprecated
+
+* Creation of `OwnedKeyValueList`
+
+## 1.4.1 - 2017-01-19
+### Fixed
+
+* Fix an invalid syntax exposed by nightly rust change (Issue #103)
+
+## 1.4.0 - 2016-12-27
+### Changed
+
+* Updated documentation
+
+### Deprecated
+
+* `OwnedKeyValueList::id`
+
+## 1.3.2 - 2016-11-19
+### Added
+
+* `slog_o` as an alternative name for `o`
+
+## 1.3.1 - 2016-11-19
+### Fixed
+
+* Cargo publishing mistake.
+
+## 1.3.0 - 2016-10-31
+### Changed
+
+* **BREAKING**: Removed default `Send+Sync` from `Drain`
+
+## 1.2.1 - 2016-10-27
+### Added
+
+* `OwnedKeyValueList::id` for owned key value unique identification
+
+## 1.2.0 - 2016-10-21
+### Changed
+
+* **BREAKING**: `Serializer` takes `key : &'static str` now
+
+### Fixed
+
+* Corner cases in `info!(...)` and other macros
+
+## 1.1.0 - 2016-10-17
+### Changed
+
+* **BREAKING**: Rewrite handling of owned values.
+
+## 1.0.1
+### Fixed
+
+* `use std` in `o!`
+
+### Added
+
+* Implement `fmt::Debug` for `Logger`
+
+## 1.0.0 - 2016-09-21
+
+First stable release.