Version 0.6.0

Includes these changes:

* Breaking change: Remove deprecated `SmallVecN` type aliases and
  `push_all_move` method.

* Breaking change: Make `retain` pass `&mut T` to its predicate.

* Add new methods `dedup`, `dedup_by`, and `dedup_by_key`.

* Deprecate the `VecLike` trait in favor of standard library traits.

* Optimize the `Clone` and `Deserialize` implementations to avoid
  unnecessary reallocation.

* Optimize `extend_from_slice` and `insert_from_slice` to use
  `copy_nonoverlapping`.

* Include the text of the Mozilla Public License in the source repo.

* Improved documentation.

Author: mbrubeck

Cargo.toml

@@ -1,11 +1,12 @@
 [package]
 name = "smallvec"
-version = "0.5.0"
+version = "0.6.0"
 authors = ["Simon Sapin <simon.sapin@exyr.org>"]
 license = "MPL-2.0"
 repository = "https://github.com/servo/rust-smallvec"
 description = "'Small vector' optimization: store up to a small number of items on the stack"
 keywords = ["small", "vec", "vector", "stack", "no_std"]
+categories = ["data-structures"]
 readme = "README.md"
 documentation = "http://doc.servo.org/smallvec/"