Support Rust 1.13.0

.travis.yml

@@ -4,7 +4,7 @@ env:
   - FEATURES='serde-1'
 matrix:
   include:
-    - rust: 1.14.0
+    - rust: 1.13.0
     - rust: stable
       env:
         - NODEFAULT=1

src/lib.rs

@@ -21,7 +21,7 @@
 //!
 //! ## Rust Version
 //!
-//! This version of arrayvec requires Rust 1.14 or later.
+//! This version of arrayvec requires Rust 1.13 or later.
 //!
 #![doc(html_root_url="https://docs.rs/arrayvec/0.4/")]
 #![cfg_attr(not(feature="std"), no_std)]