Add smallvec

Author: David Judd

Cargo.toml

@@ -19,3 +19,6 @@ Unicode Standard Annex #15.
 """
 
 exclude = [ "target/*", "Cargo.lock", "scripts/tmp", "*.txt" ]
+
+[dependencies]
+smallvec = "0.6"

src/lib.rs

@@ -41,6 +41,8 @@
 #![doc(html_logo_url = "https://unicode-rs.github.io/unicode-rs_sm.png",
        html_favicon_url = "https://unicode-rs.github.io/unicode-rs_sm.png")]
 
+extern crate smallvec;
+
 pub use tables::UNICODE_VERSION;
 pub use decompose::Decompositions;
 pub use quick_check::{