Update encoding_rs to 0.7.0

Author: hsivonen

Cargo.toml

@@ -16,7 +16,7 @@ exclude = ["src/css-parsing-tests/**", "src/big-data-url.css"]
 [dev-dependencies]
 rustc-serialize = "0.3"
 difference = "1.0"
-encoding_rs = "0.5"
+encoding_rs = "0.7"
 
 [dependencies]
 cssparser-macros = {path = "./macros", version = "0.3"}