Vendor things

third-party/vendor/either/README.rst

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+
+Either
+======
+
+The enum ``Either`` with variants ``Left`` and ``Right`` and trait
+implementations including Iterator, Read, Write.
+
+Either has methods that are similar to Option and Result.
+
+Includes convenience macros ``try_left!()`` and ``try_right!()`` to use for
+short-circuiting logic.
+
+Please read the `API documentation here`__
+
+__ https://docs.rs/either/
+
+|build_status|_ |crates|_
+
+.. |build_status| image:: https://github.com/rayon-rs/either/workflows/CI/badge.svg?branch=main
+.. _build_status: https://github.com/rayon-rs/either/actions
+
+.. |crates| image:: https://img.shields.io/crates/v/either.svg
+.. _crates: https://crates.io/crates/either
+
+How to use with cargo::
+
+    [dependencies]
+    either = "1.10"
+
+
+Recent Changes
+--------------
+
+- 1.10.0
+
+  - Add new methods ``.factor_iter()``, ``.factor_iter_mut()``,  and ``.factor_into_iter()``
+    that return ``Either`` items, plus ``.iter()`` and ``.iter_mut()`` to convert to direct
+    referene iterators; by @aj-bagwell and @cuviper (#91)
+
+- 1.9.0
+
+  - Add new methods ``.map_either()`` and ``.map_either_with()``, by @nasadorian (#82)
+
+- 1.8.1
+
+  - Clarified that the multiple licenses are combined with OR.
+
+- 1.8.0
+
+  - **MSRV**: ``either`` now requires Rust 1.36 or later.
+
+  - Add new methods ``.as_pin_ref()`` and ``.as_pin_mut()`` to project a
+    pinned ``Either`` as inner ``Pin`` variants, by @cuviper (#77)
+
+  - Implement the ``Future`` trait, by @cuviper (#77)
+
+  - Specialize more methods of the ``io`` traits, by @Kixunil and @cuviper (#75)
+
+- 1.7.0
+
+  - **MSRV**: ``either`` now requires Rust 1.31 or later.
+
+  - Export the macro ``for_both!``, by @thomaseizinger (#58)
+
+  - Implement the ``io::Seek`` trait, by @Kerollmops (#60)
+
+  - Add new method ``.either_into()`` for ``Into`` conversion, by @TonalidadeHidrica (#63)
+
+  - Add new methods ``.factor_ok()``, ``.factor_err()``, and ``.factor_none()``,
+    by @zachs18 (#67)
+
+  - Specialize ``source`` in the ``Error`` implementation, by @thomaseizinger (#69)
+
+  - Specialize more iterator methods and implement the ``FusedIterator`` trait,
+    by @Ten0 (#66) and @cuviper (#71)
+
+  - Specialize ``Clone::clone_from``, by @cuviper (#72)
+
+- 1.6.1
+
+  - Add new methods ``.expect_left()``, ``.unwrap_left()``,
+    and equivalents on the right, by @spenserblack (#51)
+
+- 1.6.0
+
+  - Add new modules ``serde_untagged`` and ``serde_untagged_optional`` to customize
+    how ``Either`` fields are serialized in other types, by @MikailBag (#49)
+
+- 1.5.3
+
+  - Add new method ``.map()`` for ``Either<T, T>`` by @nvzqz (#40).
+
+- 1.5.2
+
+  - Add new methods ``.left_or()``, ``.left_or_default()``, ``.left_or_else()``,
+    and equivalents on the right, by @DCjanus (#36)
+
+- 1.5.1
+
+  - Add ``AsRef`` and ``AsMut`` implementations for common unsized types:
+    ``str``, ``[T]``, ``CStr``, ``OsStr``, and ``Path``, by @mexus (#29)
+
+- 1.5.0
+
+  - Add new methods ``.factor_first()``, ``.factor_second()`` and ``.into_inner()``
+    by @mathstuf (#19)
+
+- 1.4.0
+
+  - Add inherent method ``.into_iter()`` by @cuviper (#12)
+
+- 1.3.0
+
+  - Add opt-in serde support by @hcpl
+
+- 1.2.0
+
+  - Add method ``.either_with()`` by @Twey (#13)
+
+- 1.1.0
+
+  - Add methods ``left_and_then``, ``right_and_then`` by @rampantmonkey
+  - Include license files in the repository and released crate
+
+- 1.0.3
+
+  - Add crate categories
+
+- 1.0.2
+
+  - Forward more ``Iterator`` methods
+  - Implement ``Extend`` for ``Either<L, R>`` if ``L, R`` do.
+
+- 1.0.1
+
+  - Fix ``Iterator`` impl for ``Either`` to forward ``.fold()``.
+
+- 1.0.0
+
+  - Add default crate feature ``use_std`` so that you can opt out of linking to
+    std.
+
+- 0.1.7
+
+  - Add methods ``.map_left()``, ``.map_right()`` and ``.either()``.
+  - Add more documentation
+
+- 0.1.3
+
+  - Implement Display, Error
+
+- 0.1.2
+
+  - Add macros ``try_left!`` and ``try_right!``.
+
+- 0.1.1
+
+  - Implement Deref, DerefMut
+
+- 0.1.0
+
+  - Initial release
+  - Support Iterator, Read, Write
+
+License
+-------
+
+Dual-licensed to be compatible with the Rust project.
+
+Licensed under the Apache License, Version 2.0
+https://www.apache.org/licenses/LICENSE-2.0 or the MIT license
+https://opensource.org/licenses/MIT, at your
+option. This file may not be copied, modified, or distributed
+except according to those terms.