Bump env to 0.3.0 also.

Author: huonw

env/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "env_logger"
-version = "0.2.3"
+version = "0.3.0"
 authors = ["The Rust Project Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rust-lang/log"
@@ -12,7 +12,7 @@ variable.
 """
 
 [dependencies.log]
-version = "0.2"
+version = "0.3"
 path = ".."
 
 [dependencies]