Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

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+# Changelog
+
+This file lists the most important changes made in each release of
+`textwrap`.
+
+## Version 0.15.2 (2022-10-24)
+
+This release is identical to 0.15.0 and is only there to give people a
+way to install crates which depend on the yanked 0.15.1 release. See
+[#484](https://github.com/mgeisler/textwrap/issues/484) for details.
+
+## Version 0.15.0 (2022-02-27)
+
+This is a major feature release with two main changes:
+
+* [#421](https://github.com/mgeisler/textwrap/pull/421): Use `f64`
+  instead of `usize` for fragment widths.
+
+  This fixes problems with overflows in the internal computations of
+  `wrap_optimal_fit` when fragments (words) or line lenghts had
+  extreme values, such as `usize::MAX`.
+
+* [#438](https://github.com/mgeisler/textwrap/pull/438): Simplify
+  `Options` by removing generic type parameters.
+
+  This change removes the new generic parameters introduced in version
+  0.14, as well as the original `WrapSplitter` parameter which has
+  been present since very early versions.
+
+  The result is a simplification of function and struct signatures
+  across the board. So what used to be
+
+  ```rust
+  let options: Options<
+      wrap_algorithms::FirstFit,
+      word_separators::AsciiSpace,
+      word_splitters::HyphenSplitter,
+  > = Options::new(80);
+  ```
+
+  if types are fully written out, is now simply
+
+  ```rust
+  let options: Options<'_> = Options::new(80);
+  ```
+
+  The anonymous lifetime represent the lifetime of the
+  `initial_indent` and `subsequent_indent` strings. The change is
+  nearly performance neutral (a 1-2% regression).
+
+Smaller improvements and changes:
+
+* [#404](https://github.com/mgeisler/textwrap/pull/404): Make
+  documentation for short last-line penalty more precise.
+* [#405](https://github.com/mgeisler/textwrap/pull/405): Cleanup and
+  simplify `Options` docstring.
+* [#411](https://github.com/mgeisler/textwrap/pull/411): Default to
+  `OptimalFit` in interactive example.
+* [#415](https://github.com/mgeisler/textwrap/pull/415): Add demo
+  program to help compute binary sizes.
+* [#423](https://github.com/mgeisler/textwrap/pull/423): Add fuzz
+  tests with fully arbitrary fragments.
+* [#424](https://github.com/mgeisler/textwrap/pull/424): Change
+  `wrap_optimal_fit` penalties to non-negative numbers.
+* [#430](https://github.com/mgeisler/textwrap/pull/430): Add
+  `debug-words` example.
+* [#432](https://github.com/mgeisler/textwrap/pull/432): Use precise
+  dependency versions in Cargo.toml.
+
+## Version 0.14.2 (2021-06-27)
+
+The 0.14.1 release included more changes than intended and has been
+yanked. The change intended for 0.14.1 is now included in 0.14.2.
+
+## Version 0.14.1 (2021-06-26)
+
+This release fixes a panic reported by @Makoto, thanks!
+
+* [#391](https://github.com/mgeisler/textwrap/pull/391): Fix panic in
+  `find_words` due to string access outside of a character boundary.
+
+## Version 0.14.0 (2021-06-05)
+
+This is a major feature release which makes Textwrap more configurable
+and flexible. The high-level API of `textwrap::wrap` and
+`textwrap::fill` remains unchanged, but low-level structs have moved
+around.
+
+The biggest change is the introduction of new generic type parameters
+to the `Options` struct. These parameters lets you statically
+configure the wrapping algorithm, the word separator, and the word
+splitter. If you previously spelled out the full type for `Options`,
+you now need to take the extra type parameters into account. This
+means that
+
+```rust
+let options: Options<HyphenSplitter> = Options::new(80);
+```
+
+changes to
+
+```rust
+let options: Options<
+    wrap_algorithms::FirstFit,
+    word_separators::AsciiSpace,
+    word_splitters::HyphenSplitter,
+> = Options::new(80);
+```
+
+This is quite a mouthful, so we suggest using type inferrence where
+possible. You won’t see any chance if you call `wrap` directly with a
+width or with an `Options` value constructed on the fly. Please open
+an issue if this causes problems for you!
+
+### New `WordSeparator` Trait
+
+* [#332](https://github.com/mgeisler/textwrap/pull/332): Add
+  `WordSeparator` trait to allow customizing how words are found in a
+  line of text. Until now, Textwrap would always assume that words are
+  separated by ASCII space characters. You can now customize this as
+  needed.
+
+* [#313](https://github.com/mgeisler/textwrap/pull/313): Add support
+  for using the Unicode line breaking algorithm to find words. This is
+  done by adding a second implementation of the new `WordSeparator`
+  trait. The implementation uses the unicode-linebreak crate, which is
+  a new optional dependency.
+
+  With this, Textwrap can be used with East-Asian languages such as
+  Chinese or Japanese where there are no spaces between words.
+  Breaking a long sequence of emojis is another example where line
+  breaks might be wanted even if there are no whitespace to be found.
+  Feedback would be appreciated for this feature.
+
+
+### Indent
+
+* [#353](https://github.com/mgeisler/textwrap/pull/353): Trim trailing
+  whitespace from `prefix` in `indent`.
+
+  Before, empty lines would get no prefix added. Now, empty lines have
+  a trimmed prefix added. This little trick makes `indent` much more
+  useful since you can now safely indent with `"# "` without creating
+  trailing whitespace in the output due to the trailing whitespace in
+  your prefix.
+
+* [#354](https://github.com/mgeisler/textwrap/pull/354): Make `indent`
+  about 20% faster by preallocating the output string.
+
+
+### Documentation
+
+* [#308](https://github.com/mgeisler/textwrap/pull/308): Document
+  handling of leading and trailing whitespace when wrapping text.
+
+### WebAssembly Demo
+
+* [#310](https://github.com/mgeisler/textwrap/pull/310): Thanks to
+  WebAssembly, you can now try out Textwrap directly in your browser.
+  Please try it out: https://mgeisler.github.io/textwrap/.
+
+### New Generic Parameters
+
+* [#331](https://github.com/mgeisler/textwrap/pull/331): Remove outer
+  boxing from `Options`.
+
+* [#357](https://github.com/mgeisler/textwrap/pull/357): Replace
+  `core::WrapAlgorithm` enum with a `wrap_algorithms::WrapAlgorithm`
+  trait. This allows for arbitrary wrapping algorithms to be plugged
+  into the library.
+
+* [#358](https://github.com/mgeisler/textwrap/pull/358): Switch
+  wrapping functions to use a slice for `line_widths`.
+
+* [#368](https://github.com/mgeisler/textwrap/pull/368): Move
+  `WordSeparator` and `WordSplitter` traits to separate modules.
+  Before, Textwrap had several top-level structs such as
+  `NoHyphenation` and `HyphenSplitter`. These implementations of
+  `WordSplitter` now lives in a dedicated `word_splitters` module.
+  Similarly, we have a new `word_separators` module for
+  implementations of `WordSeparator`.
+
+* [#369](https://github.com/mgeisler/textwrap/pull/369): Rename
+  `Options::splitter` to `Options::word_splitter` for consistency with
+  the other fields backed by traits.
+
+## Version 0.13.4 (2021-02-23)
+
+This release removes `println!` statements which was left behind in
+`unfill` by mistake.
+
+* [#296](https://github.com/mgeisler/textwrap/pull/296): Improve house
+  building example with more comments.
+* [#297](https://github.com/mgeisler/textwrap/pull/297): Remove debug
+  prints in the new `unfill` function.
+
+## Version 0.13.3 (2021-02-20)
+
+This release contains a bugfix for `indent` and improved handling of
+emojis. We’ve also added a new function for formatting text in columns
+and functions for reformatting already wrapped text.
+
+* [#276](https://github.com/mgeisler/textwrap/pull/276): Extend
+  `core::display_width` to handle emojis when the unicode-width Cargo
+  feature is disabled.
+* [#279](https://github.com/mgeisler/textwrap/pull/279): Make `indent`
+  preserve existing newlines in the input string. Before,
+  `indent("foo", "")` would return `"foo\n"` by mistake. It now
+  returns `"foo"` instead.
+* [#281](https://github.com/mgeisler/textwrap/pull/281): Ensure all
+  `Options` fields have examples.
+* [#282](https://github.com/mgeisler/textwrap/pull/282): Add a
+  `wrap_columns` function.
+* [#294](https://github.com/mgeisler/textwrap/pull/294): Add new
+  `unfill` and `refill` functions.
+
+## Version 0.13.2 (2020-12-30)
+
+This release primarily makes all dependencies optional. This makes it
+possible to slim down textwrap as needed.
+
+* [#254](https://github.com/mgeisler/textwrap/pull/254): `impl
+  WordSplitter` for `Box<T> where T: WordSplitter`.
+* [#255](https://github.com/mgeisler/textwrap/pull/255): Use command
+  line arguments as initial text in interactive example.
+* [#256](https://github.com/mgeisler/textwrap/pull/256): Introduce
+  fuzz tests for `wrap_optimal_fit` and `wrap_first_fit`.
+* [#260](https://github.com/mgeisler/textwrap/pull/260): Make the
+  unicode-width dependency optional.
+* [#261](https://github.com/mgeisler/textwrap/pull/261): Make the
+  smawk dependency optional.
+
+## Version 0.13.1 (2020-12-10)
+
+This is a bugfix release which fixes a regression in 0.13.0. The bug
+meant that colored text was wrapped incorrectly.
+
+* [#245](https://github.com/mgeisler/textwrap/pull/245): Support
+  deleting a word with Ctrl-Backspace in the interactive demo.
+* [#246](https://github.com/mgeisler/textwrap/pull/246): Show build
+  type (debug/release) in interactive demo.
+* [#249](https://github.com/mgeisler/textwrap/pull/249): Correctly
+  compute width while skipping over ANSI escape sequences.
+
+## Version 0.13.0 (2020-12-05)
+
+This is a major release which rewrites the core logic, adds many new
+features, and fixes a couple of bugs. Most programs which use
+`textwrap` stays the same, incompatibilities and upgrade notes are
+given below.
+
+Clone the repository and run the following to explore the new features
+in an interactive demo (Linux only):
+
+```sh
+$ cargo run --example interactive --all-features
+```
+
+### Bug Fixes
+
+#### Rewritten core wrapping algorithm
+
+* [#221](https://github.com/mgeisler/textwrap/pull/221): Reformulate
+  wrapping in terms of words with whitespace and penalties.
+
+The core wrapping algorithm has been completely rewritten. This fixed
+bugs and simplified the code, while also making it possible to use
+`textwrap` outside the context of the terminal.
+
+As part of this, trailing whitespace is now discarded consistently
+from wrapped lines. Before we would inconsistently remove whitespace
+at the end of wrapped lines, except for the last. Leading whitespace
+is still preserved.
+
+### New Features
+
+#### Optimal-fit wrapping
+
+* [#234](https://github.com/mgeisler/textwrap/pull/234): Introduce
+  wrapping using an optimal-fit algorithm.
+
+This release adds support for new wrapping algorithm which finds a
+globally optimal set of line breaks, taking certain penalties into
+account. As an example, the old algorithm would produce
+
+    "To be, or"
+    "not to be:"
+    "that is"
+    "the"
+    "question"
+
+Notice how the fourth line with “the” is very short. The new algorithm
+shortens the previous lines slightly to produce fewer short lines:
+
+    "To be,"
+    "or not to"
+    "be: that"
+    "is the"
+    "question"
+
+Use the new `textwrap::core::WrapAlgorithm` enum to select between the
+new and old algorithm. By default, the new algorithm is used.
+
+The optimal-fit algorithm is inspired by the line breaking algorithm
+used in TeX, described in the 1981 article [_Breaking Paragraphs into
+Lines_](http://www.eprg.org/G53DOC/pdfs/knuth-plass-breaking.pdf) by
+Knuth and Plass.
+
+#### In-place wrapping
+
+* [#226](https://github.com/mgeisler/textwrap/pull/226): Add a
+  `fill_inplace` function.
+
+When the text you want to fill is already a temporary `String`, you
+can now mutate it in-place with `fill_inplace`:
+
+```rust
+let mut greeting = format!("Greetings {}, welcome to the game! You have {} lives left.",
+                           player.name, player.lives);
+fill_inplace(&mut greeting, line_width);
+```
+
+This is faster than calling `fill` and it will reuse the memory
+already allocated for the string.
+
+### Changed Features
+
+#### `Wrapper` is replaced with `Options`
+
+* [#213](https://github.com/mgeisler/textwrap/pull/213): Simplify API
+  with only top-level functions.
+* [#215](https://github.com/mgeisler/textwrap/pull/215): Reintroducing
+  the type parameter on `Options` (previously known as `Wrapper`).
+* [#219](https://github.com/mgeisler/textwrap/pull/219): Allow using
+  trait objects with `fill` & `wrap`.
+* [#227](https://github.com/mgeisler/textwrap/pull/227): Replace
+  `WrapOptions` with `Into<Options>`.
+
+The `Wrapper` struct held the options (line width, indentation, etc)
+for wrapping text. It was also the entry point for actually wrapping
+the text via its methods such as `wrap`, `wrap_iter`,
+`into_wrap_iter`, and `fill` methods.
+
+The struct has been replaced by a simpler `Options` struct which only
+holds options. The `Wrapper` methods are gone, their job has been
+taken over by the top-level `wrap` and `fill` functions. The signature
+of these functions have changed from
+
+```rust
+fn fill(s: &str, width: usize) -> String;
+
+fn wrap(s: &str, width: usize) -> Vec<Cow<'_, str>>;
+```
+
+to the more general
+
+```rust
+fn fill<'a, S, Opt>(text: &str, options: Opt) -> String
+where
+    S: WordSplitter,
+    Opt: Into<Options<'a, S>>;
+
+fn wrap<'a, S, Opt>(text: &str, options: Opt) -> Vec<Cow<'_, str>>
+where
+    S: WordSplitter,
+    Opt: Into<Options<'a, S>>;
+```
+
+The `Into<Options<'a, S>` bound allows you to pass an `usize` (which
+is interpreted as the line width) *and* a full `Options` object. This
+allows the new functions to work like the old, plus you can now fully
+customize the behavior of the wrapping via `Options` when needed.
+
+Code that call `textwrap::wrap` or `textwrap::fill` can remain
+unchanged. Code that calls into `Wrapper::wrap` or `Wrapper::fill`
+will need to be update. This is a mechanical change, please see
+[#213](https://github.com/mgeisler/textwrap/pull/213) for examples.
+
+Thanks to @CryptJar and @Koxiat for their support in the PRs above!
+
+### Removed Features
+
+* The `wrap_iter` and `into_wrap_iter` methods are gone. This means
+  that lazy iteration is no longer supported: you always get all
+  wrapped lines back as a `Vec`. This was done to simplify the code
+  and to support the optimal-fit algorithm.
+
+  The first-fit algorithm could still be implemented in an incremental
+  fashion. Please let us know if this is important to you.
+
+### Other Changes
+
+* [#206](https://github.com/mgeisler/textwrap/pull/206): Change
+  `Wrapper.splitter` from `T: WordSplitter` to `Box<dyn
+  WordSplitter>`.
+* [#216](https://github.com/mgeisler/textwrap/pull/216): Forbid the
+  use of unsafe code.
+
+## Version 0.12.1 (2020-07-03)
+
+This is a bugfix release.
+
+* Fixed [#176][issue-176]: Mention compile-time wrapping by linking to
+  the [`textwrap-macros` crate].
+* Fixed [#193][issue-193]: Wrapping with `break_words(false)` was
+  broken and would cause extra whitespace to be inserted when words
+  were longer than the line width.
+
+## Version 0.12.0 (2020-06-26)
+
+The code has been updated to the [Rust 2018 edition][rust-2018] and
+each new release of `textwrap` will only support the latest stable
+version of Rust. Trying to support older Rust versions is a fool's
+errand: our dependencies keep releasing new patch versions that
+require newer and newer versions of Rust.
+
+The `term_size` feature has been replaced by `terminal_size`. The API
+is unchanged, it is just the name of the Cargo feature that changed.
+
+The `hyphenation` feature now only embeds the hyphenation patterns for
+US-English. This slims down the dependency.
+
+* Fixed [#140][issue-140]: Ignore ANSI escape sequences.
+* Fixed [#158][issue-158]: Unintended wrapping when using external splitter.
+* Fixed [#177][issue-177]: Update examples to the 2018 edition.
+
+## Version 0.11.0 (2018-12-09)
+
+Due to our dependencies bumping their minimum supported version of
+Rust, the minimum version of Rust we test against is now 1.22.0.
+
+* Merged [#141][issue-141]: Fix `dedent` handling of empty lines and
+  trailing newlines. Thanks @bbqsrc!
+* Fixed [#151][issue-151]: Release of version with hyphenation 0.7.
+
+## Version 0.10.0 (2018-04-28)
+
+Due to our dependencies bumping their minimum supported version of
+Rust, the minimum version of Rust we test against is now 1.17.0.
+
+* Fixed [#99][issue-99]: Word broken even though it would fit on line.
+* Fixed [#107][issue-107]: Automatic hyphenation is off by one.
+* Fixed [#122][issue-122]: Take newlines into account when wrapping.
+* Fixed [#129][issue-129]: Panic on string with em-dash.
+
+## Version 0.9.0 (2017-10-05)
+
+The dependency on `term_size` is now optional, and by default this
+feature is not enabled. This is a *breaking change* for users of
+`Wrapper::with_termwidth`. Enable the `term_size` feature to restore
+the old functionality.
+
+Added a regression test for the case where `width` is set to
+`usize::MAX`, thanks @Fraser999! All public structs now implement
+`Debug`, thanks @hcpl!
+
+* Fixed [#101][issue-101]: Make `term_size` an optional dependency.
+
+## Version 0.8.0 (2017-09-04)
+
+The `Wrapper` stuct is now generic over the type of word splitter
+being used. This means less boxing and a nicer API. The
+`Wrapper::word_splitter` method has been removed. This is a *breaking
+API change* if you used the method to change the word splitter.
+
+The `Wrapper` struct has two new methods that will wrap the input text
+lazily: `Wrapper::wrap_iter` and `Wrapper::into_wrap_iter`. Use those
+if you will be iterating over the wrapped lines one by one.
+
+* Fixed [#59][issue-59]: `wrap` could return an iterator. Thanks
+  @hcpl!
+* Fixed [#81][issue-81]: Set `html_root_url`.
+
+## Version 0.7.0 (2017-07-20)
+
+Version 0.7.0 changes the return type of `Wrapper::wrap` from
+`Vec<String>` to `Vec<Cow<'a, str>>`. This means that the output lines
+borrow data from the input string. This is a *breaking API change* if
+you relied on the exact return type of `Wrapper::wrap`. Callers of the
+`textwrap::fill` convenience function will see no breakage.
+
+The above change and other optimizations makes version 0.7.0 roughly
+15-30% faster than version 0.6.0.
+
+The `squeeze_whitespace` option has been removed since it was
+complicating the above optimization. Let us know if this option is
+important for you so we can provide a work around.
+
+* Fixed [#58][issue-58]: Add a "fast_wrap" function.
+* Fixed [#61][issue-61]: Documentation errors.
+
+## Version 0.6.0 (2017-05-22)
+
+Version 0.6.0 adds builder methods to `Wrapper` for easy one-line
+initialization and configuration:
+
+```rust
+let wrapper = Wrapper::new(60).break_words(false);
+```
+
+It also add a new `NoHyphenation` word splitter that will never split
+words, not even at existing hyphens.
+
+* Fixed [#28][issue-28]: Support not squeezing whitespace.
+
+## Version 0.5.0 (2017-05-15)
+
+Version 0.5.0 has *breaking API changes*. However, this only affects
+code using the hyphenation feature. The feature is now optional, so
+you will first need to enable the `hyphenation` feature as described
+above. Afterwards, please change your code from
+```rust
+wrapper.corpus = Some(&corpus);
+```
+to
+```rust
+wrapper.splitter = Box::new(corpus);
+```
+
+Other changes include optimizations, so version 0.5.0 is roughly
+10-15% faster than version 0.4.0.
+
+* Fixed [#19][issue-19]: Add support for finding terminal size.
+* Fixed [#25][issue-25]: Handle words longer than `self.width`.
+* Fixed [#26][issue-26]: Support custom indentation.
+* Fixed [#36][issue-36]: Support building without `hyphenation`.
+* Fixed [#39][issue-39]: Respect non-breaking spaces.
+
+## Version 0.4.0 (2017-01-24)
+
+Documented complexities and tested these via `cargo bench`.
+
+* Fixed [#13][issue-13]: Immediatedly add word if it fits.
+* Fixed [#14][issue-14]: Avoid splitting on initial hyphens.
+
+## Version 0.3.0 (2017-01-07)
+
+Added support for automatic hyphenation.
+
+## Version 0.2.0 (2016-12-28)
+
+Introduced `Wrapper` struct. Added support for wrapping on hyphens.
+
+## Version 0.1.0 (2016-12-17)
+
+First public release with support for wrapping strings on whitespace.
+
+[rust-2018]: https://doc.rust-lang.org/edition-guide/rust-2018/
+[`textwrap-macros` crate]: https://crates.io/crates/textwrap-macros
+
+[issue-13]: https://github.com/mgeisler/textwrap/issues/13
+[issue-14]: https://github.com/mgeisler/textwrap/issues/14
+[issue-19]: https://github.com/mgeisler/textwrap/issues/19
+[issue-25]: https://github.com/mgeisler/textwrap/issues/25
+[issue-26]: https://github.com/mgeisler/textwrap/issues/26
+[issue-28]: https://github.com/mgeisler/textwrap/issues/28
+[issue-36]: https://github.com/mgeisler/textwrap/issues/36
+[issue-39]: https://github.com/mgeisler/textwrap/issues/39
+[issue-58]: https://github.com/mgeisler/textwrap/issues/58
+[issue-59]: https://github.com/mgeisler/textwrap/issues/59
+[issue-61]: https://github.com/mgeisler/textwrap/issues/61
+[issue-81]: https://github.com/mgeisler/textwrap/issues/81
+[issue-99]: https://github.com/mgeisler/textwrap/issues/99
+[issue-101]: https://github.com/mgeisler/textwrap/issues/101
+[issue-107]: https://github.com/mgeisler/textwrap/issues/107
+[issue-122]: https://github.com/mgeisler/textwrap/issues/122
+[issue-129]: https://github.com/mgeisler/textwrap/issues/129
+[issue-140]: https://github.com/mgeisler/textwrap/issues/140
+[issue-141]: https://github.com/mgeisler/textwrap/issues/141
+[issue-151]: https://github.com/mgeisler/textwrap/issues/151
+[issue-158]: https://github.com/mgeisler/textwrap/issues/158
+[issue-176]: https://github.com/mgeisler/textwrap/issues/176
+[issue-177]: https://github.com/mgeisler/textwrap/issues/177
+[issue-193]: https://github.com/mgeisler/textwrap/issues/193