Perform the correct version bump

Author: Lokathor

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 authors = ["Jorge Aparicio <[email protected]>"]
 name = "compiler_builtins"
-version = "0.1.4"
+version = "0.1.5"
 license = "MIT/Apache-2.0"
 readme = "README.md"
 repository = "https://github.com/rust-lang-nursery/compiler-builtins"