Bump sha1

Author: mitsuhiko

Cargo.toml

@@ -20,7 +20,7 @@ with-rustc-json = ["rustc-serialize"]
 with-unix-sockets = ["unix_socket"]
 
 [dependencies]
-sha1 = "0.1.1"
+sha1 = "0.2.0"
 url = "1.1"
 rustc-serialize = { version = "0.3.16", optional = true }
 unix_socket = { version = "0.5.0", optional = true }