Update log to 0.4 and bump version

Author: Eijebong

Cargo.lock

@@ -13,7 +13,7 @@ name = "bindgen"
 readme = "README.md"
 repository = "https://github.com/rust-lang-nursery/rust-bindgen"
 documentation = "https://docs.rs/bindgen"
-version = "0.32.3"
+version = "0.32.4"
 build = "build.rs"
 
 include = [
@@ -54,11 +54,11 @@ proc-macro2 = "0.2"
 
 [dependencies.env_logger]
 optional = true
-version = "0.4"
+version = "0.5"
 
 [dependencies.log]
 optional = true
-version = "0.3"
+version = "0.4"
 
 [features]
 default = ["logging"]