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diff --git a/vendor/encode_unicode/src/lib.rs b/vendor/encode_unicode/src/lib.rs
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+/* Copyright 2016 The encode_unicode Developers
+ *
+ * Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
+ * http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+ * http://opensource.org/licenses/MIT>, at your option. This file may not be
+ * copied, modified, or distributed except according to those terms.
+ */
+
+
+/*!
+Miscellaneous UTF-8 and UTF-16 types and methods.
+
+# Optional features:
+* `#![no_std]`-mode: There are a few differences:
+  * `Error` doesn't exist, but `description()` is made available as an inherent impl.
+  * `Extend`/`FromIterator`-implementations for `String`/`Vec<u8>`/`Vec<u16>` are missing.
+  * There is no `io`, so `Utf8Iterator` and `Utf8CharSplitter` doesn't implement `Read`.
+
+  This feature is enabled by setting `default-features=false` in `Cargo.toml`:
+  `encode_unicode = {version="0.3.4", default-features=false}`
+* Integration with the [ascii](https://tomprogrammer.github.io/rust-ascii/ascii/index.html) crate:  
+  Convert `Utf8Char` and `Utf16Char` to and from
+  [ascii::`AsciiChar`](https://tomprogrammer.github.io/rust-ascii/ascii/enum.AsciiChar.html).
+
+The minimum supported version of Rust is 1.15,
+older versions might work now but can break with a minor update.
+
+[crates.io page](https://crates.io/crates/encode_unicode)  
+[github repository](https://github.com/tormol/encode_unicode)
+
+*/
+
+#![warn(missing_docs)]
+
+#![cfg_attr(not(feature="std"), no_std)]
+// either `cargo clippy` doesn't see theese, or I get a warning when I build.
+#![cfg_attr(feature="clippy", feature(plugin))]
+#![cfg_attr(feature="clippy", plugin(clippy))]
+#![cfg_attr(feature="clippy", allow(derive_hash_xor_eq))]// tested
+#![cfg_attr(feature="clippy", allow(len_without_is_empty))]// UtfxChar is never empty
+#![cfg_attr(feature="clippy", allow(match_same_arms))]// looks better IMO
+#![cfg_attr(feature="clippy", allow(needless_return))]// `foo.bar(); foo` looks unfinished
+#![cfg_attr(feature="clippy", allow(redundant_closure))]// keep it explicit
+#![cfg_attr(feature="clippy", allow(redundant_closure_call))]// not redundant in macros
+#![cfg_attr(feature="clippy", allow(cast_lossless))]// too much noise (and too verbose)
+// precedence: I prefer spaces to parentheses, but it's nice to recheck.
+
+mod errors;
+mod traits;
+mod utf8_char;
+mod utf8_iterators;
+mod utf16_char;
+mod utf16_iterators;
+mod decoding_iterators;
+
+pub use traits::{CharExt, U8UtfExt, U16UtfExt, StrExt, IterExt, SliceExt};
+pub use utf8_char::Utf8Char;
+pub use utf16_char::Utf16Char;
+pub use utf8_iterators::{Utf8Iterator, iter_bytes};
+pub use utf16_iterators::{Utf16Iterator, iter_units};
+
+pub mod error {// keeping the public interface in one file
+    //! Errors returned by various conversion methods in this crate.
+    pub use errors::{FromStrError, EmptyStrError};
+    pub use errors::{InvalidCodepoint, InvalidUtf8};
+    pub use errors::{InvalidUtf8FirstByte,InvalidUtf16FirstUnit};
+    pub use errors::{InvalidUtf8Slice,InvalidUtf16Slice};
+    pub use errors::{InvalidUtf8Array,InvalidUtf16Array,InvalidUtf16Tuple};
+    pub use errors::Utf16PairError;
+}
+
+pub mod iterator {
+    //! Iterator types that you should rarely need to name
+    pub use utf8_iterators::{Utf8Iterator, Utf8CharSplitter, Utf8Chars, Utf8CharIndices};
+    pub use utf16_iterators::{Utf16Iterator, Utf16CharSplitter, Utf16Chars, Utf16CharIndices};
+    pub use decoding_iterators::{Utf8CharMerger, Utf8CharDecoder};
+    pub use decoding_iterators::{Utf16CharMerger, Utf16CharDecoder};
+}