Auto merge of #255 - nox:syn, r=SimonSapin

Update syn to 0.11

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Author: bors-servo

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 
 name = "html5ever"
-version = "0.13.0"
+version = "0.13.1"
 authors = [ "The html5ever Project Developers" ]
 license = "MIT / Apache-2.0"
 repository = "https://github.com/servo/html5ever"
@@ -51,7 +51,7 @@ rustc-test = "0.1.3"
 phf_codegen = "0.7.3"
 quote = "0.3.3"
 rustc-serialize = "0.3.15"
-syn = { version = "0.10", features = ["full", "visit"] }
+syn = { version = "0.11", features = ["full", "visit"] }
 
 [profile.dev]
 debug = false