Vendor things

third-party/vendor/smartstring/README.md

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+# smartstring
+
+Compact inlined strings.
+
+## tl;dr
+
+String type that's source compatible with `std::string::String`, uses exactly the same amount of
+space, doesn't heap allocate for short strings (up to 23 bytes on 64-bit archs) by storing them in
+the space a `String` would have taken up on the stack, making strings go faster overall.
+
+## Overview
+
+This crate provides a wrapper for Rust's standard `String` which uses the space a `String` occupies
+on the stack to store inline string data, automatically promoting it to a `String` when it grows
+beyond the inline capacity. This has the advantage of avoiding heap allocations for short strings as
+well as improving performance thanks to keeping the strings on the stack.
+
+This is all accomplished without the need for an external discriminant, so a `SmartString` is
+exactly the same size as a `String` on the stack, regardless of whether it's inlined or not.
+Converting a heap allocated `SmartString` into a `String` and vice versa is also a zero cost
+operation, as one will reuse the allocated memory of the other.
+
+## Documentation
+
+-   [API docs](https://docs.rs/smartstring)
+
+## Licence
+
+Copyright 2020 Bodil Stokke
+
+This software is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL
+was not distributed with this file, You can obtain one at <http://mozilla.org/MPL/2.0/>.
+
+## Code of Conduct
+
+Please note that this project is released with a [Contributor Code of Conduct][coc]. By
+participating in this project you agree to abide by its terms.
+
+[coc]: https://github.com/bodil/sized-chunks/blob/master/CODE_OF_CONDUCT.md