Add structopt dependency in version 0.3.7

This patch series replaces argparse with structopt in the argument
handling code. As a first step, we need structopt as a dependency.

Import subrepo structopt/:structopt at efbdda4753592e27bc430fb01f7b9650b2f3174d
Import subrepo bitflags/:bitflags at 30668016aca6bd3b02c766e8347e0b4080d4c296
Import subrepo clap/:clap at 784524f7eb193e35f81082cc69454c8c21b948f7
Import subrepo heck/:heck at 093d56fbf001e1506e56dbfa38631d99b1066df1
Import subrepo proc-macro-error/:proc-macro-error at 6c4cfe79a622c5de8ae68557993542be46eacae2
Import subrepo proc-macro2/:proc-macro2 at d5d48eddca4566e5438e8a2cbed4a74e049544de
Import subrepo quote/:quote at 727436c6c137b20f0f34dde5d8fda2679b9747ad
Import subrepo rustversion/:rustversion at 0c5663313516263059ce9059ef81fc7a1cf655ca
Import subrepo syn-mid/:syn-mid at 5d3d85414a9e6674e1857ec22a87b96e04a6851a
Import subrepo syn/:syn at e87c27e87f6f4ef8919d0372bdb056d53ef0d8f3
Import subrepo textwrap/:textwrap at abcd618beae3f74841032aa5b53c1086b0a57ca2
Import subrepo unicode-segmentation/:unicode-segmentation at 637c9874c4fe0c205ff27787faf150a40295c6c3
Import subrepo unicode-width/:unicode-width at 3033826f8bf05e82724140a981d5941e48fce393
Import subrepo unicode-xid/:unicode-xid at 4baae9fffb156ba229665b972a9cd5991787ceb7

1 files changed, 89 insertions, 0 deletions

diff --git a/unicode-segmentation/README.md b/unicode-segmentation/README.md
new file mode 100644
index 0000000..08fe6b8
--- /dev/null
+++ b/unicode-segmentation/README.md
@@ -0,0 +1,89 @@
+Iterators which split strings on Grapheme Cluster or Word boundaries, according
+to the [Unicode Standard Annex #29](http://www.unicode.org/reports/tr29/) rules.
+
+[![Build Status](https://travis-ci.org/unicode-rs/unicode-segmentation.svg)](https://travis-ci.org/unicode-rs/unicode-segmentation)
+
+[Documentation](https://unicode-rs.github.io/unicode-segmentation/unicode_segmentation/index.html)
+
+```rust
+use unicode_segmentation::UnicodeSegmentation;
+
+fn main() {
+    let s = "a̐éö̲\r\n";
+    let g = UnicodeSegmentation::graphemes(s, true).collect::<Vec<&str>>();
+    let b: &[_] = &["a̐", "é", "ö̲", "\r\n"];
+    assert_eq!(g, b);
+
+    let s = "The quick (\"brown\") fox can't jump 32.3 feet, right?";
+    let w = s.unicode_words().collect::<Vec<&str>>();
+    let b: &[_] = &["The", "quick", "brown", "fox", "can't", "jump", "32.3", "feet", "right"];
+    assert_eq!(w, b);
+
+    let s = "The quick (\"brown\")  fox";
+    let w = s.split_word_bounds().collect::<Vec<&str>>();
+    let b: &[_] = &["The", " ", "quick", " ", "(", "\"", "brown", "\"", ")", " ", " ", "fox"];
+    assert_eq!(w, b);
+}
+```
+
+# no_std
+
+unicode-segmentation does not depend on libstd, so it can be used in crates
+with the `#![no_std]` attribute.
+
+# crates.io
+
+You can use this package in your project by adding the following
+to your `Cargo.toml`:
+
+```toml
+[dependencies]
+unicode-segmentation = "1.3.0"
+```
+
+# Change Log
+
+## 1.6.0
+
+* [#72](https://github.com/unicode-rs/unicode-segmentation/pull/72) Upgrade to Unicode 12
+
+## 1.5.0
+
+* [#68](https://github.com/unicode-rs/unicode-segmentation/pull/68) Upgrade to Unicode 11
+
+## 1.4.0
+
+* [#56](https://github.com/unicode-rs/unicode-segmentation/pull/56) Upgrade to Unicode 10
+
+## 1.3.0
+
+* [#24](https://github.com/unicode-rs/unicode-segmentation/pull/24) Add support for sentence boundaries
+* [#44](https://github.com/unicode-rs/unicode-segmentation/pull/44) Treat `gc=No` as a subset of `gc=N`
+
+## 1.2.1
+
+* [#37](https://github.com/unicode-rs/unicode-segmentation/pull/37):
+  Fix panic in `provide_context`.
+* [#40](https://github.com/unicode-rs/unicode-segmentation/pull/40):
+  Fix crash in `prev_boundary`.
+
+## 1.2.0
+
+* New `GraphemeCursor` API allows random access and bidirectional iteration.
+* Fixed incorrect splitting of certain emoji modifier sequences.
+
+## 1.1.0
+
+* Add `as_str` methods to the iterator types.
+
+## 1.0.3
+
+* Code cleanup and additional tests.
+
+## 1.0.1
+
+* Fix a bug affecting some grapheme clusters containing Prepend characters.
+
+## 1.0.0
+
+* Upgrade to Unicode 9.0.0.