Auto merge of #221 - nox:bump, r=SimonSapin

Bump to 0.6

0.5.5 was yanked because the change to get_template_contents was a breaking change.

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Author: bors-servo

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 
 name = "html5ever"
-version = "0.5.5"
+version = "0.6.0"
 authors = [ "The html5ever Project Developers" ]
 license = "MIT / Apache-2.0"
 repository = "https://github.com/servo/html5ever"
@@ -41,7 +41,7 @@ phf = "0.7"
 string_cache = "0.2.0"
 mac = "0"
 tendril = "0.2.2"
-heapsize = { version = ">=0.1.1, <0.4", optional = true }
+heapsize = { version = "0.3", optional = true }
 heapsize_plugin = { version = "0.1.0", optional = true }
 
 [dev-dependencies]