Auto merge of #121 - mbrubeck:bump, r=Manishearth

Version 0.6.5

Change log:

* #115 - add `into_inner` method
* #117 - add `from_buf_and_len` and `from_buf_and_len_unchecked`
* #118 - optimize `from_slice`
* Some code cleanup and testing improvements (#112, #113, #114, #120)

cc @llogiq

<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/rust-smallvec/121)
<!-- Reviewable:end -->

Author: bors-servo

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "smallvec"
-version = "0.6.4"
+version = "0.6.5"
 authors = ["Simon Sapin <simon.sapin@exyr.org>"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/servo/rust-smallvec"