Auto merge of rust-lang#627 - fitzgen:new-bindgen-release, r=emilio

Bump to version 0.23.0

Glancing through the git log it looks like a public API or two was renamed, and what with the template refactoring work, it seems like emitted bindings will be different enough that a breaking version bump is called for.

r? @emilio

Author: bors-servo

Cargo.lock

@@ -13,7 +13,7 @@ name = "bindgen"
 readme = "README.md"
 repository = "https://github.com/servo/rust-bindgen"
 documentation = "https://docs.rs/bindgen"
-version = "0.22.1"
+version = "0.23.0"
 build = "build.rs"
 
 exclude = ["tests/headers", "tests/expectations", "bindgen-integration", "ci"]