Merge pull request #54 from eldruin/release-0.4.3

Release 0.4.3 preparation

Author: posborne

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 
 name = "i2cdev"
-version = "0.4.2"
+version = "0.4.3"
 authors = ["Paul Osborne <[email protected]>"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rust-embedded/rust-i2cdev"
@@ -20,5 +20,5 @@ byteorder = "1"
 nix = "0.14"
 
 [dev-dependencies]
-docopt = "0.8"
+docopt = "1"