Bump version to v0.1.9 (#666)

This also includes bumps to subcrates.

* tokio-async-await (0.1.4)
* tokio-codec (0.1.1)
* tokio-current-thread (0.1.2)
* tokio-executor (0.1.5)
* tokio-io (0.1.9)
* tokio-reactor (0.1.6)
* tokio-tcp (0.1.2)
* tokio-threadpool (0.1.7)
* tokio-timer (0.2.7)

src/lib.rs

@@ -1,3 +1,11 @@
+#![doc(html_root_url = "https://docs.rs/tokio/0.1.9")]
+#![deny(missing_docs, warnings, missing_debug_implementations)]
+#![cfg_attr(feature = "async-await-preview", feature(
+        async_await,
+        await_macro,
+        futures_api,
+        ))]
+
 //! A runtime for writing reliable, asynchronous, and slim applications.
 //!
 //! Tokio is an event-driven, non-blocking I/O platform for writing asynchronous
@@ -64,14 +72,6 @@
 //! }
 //! ```
 
-#![doc(html_root_url = "https://docs.rs/tokio/0.1.5")]
-#![deny(missing_docs, warnings, missing_debug_implementations)]
-#![cfg_attr(feature = "async-await-preview", feature(
-        async_await,
-        await_macro,
-        futures_api,
-        ))]
-
 extern crate bytes;
 #[macro_use]
 extern crate futures;