0.35.0

From this release forward, html5ever, xml5ever, markup5ever, and match_token are now released using a synced version number. Thus this release is version 0.35.0 of all of these crates.

Changes

• Version numbers of all crates apart from web_atoms are now in sync. (#637)
• Remove dependency on the mac crate. (#639)
• Remove unused TreeBuilder option. (#631)
• Document scripting_enabled and iframe_srcdoc options (#631)
• Don't return a string from TreeSink::attach_declarative_shadow_root (#633)
• Determine the initial state for fragment parsing using the scripting flag of the context element (#629)