Update parse5

Closes GH-2.

Author: greenkeeperio-bot

package.json

@@ -23,7 +23,7 @@
     "hast-util-from-parse5": "^1.0.0",
     "hast-util-to-parse5": "^1.0.0",
     "html-void-elements": "^1.0.1",
-    "parse5": "^2.2.3",
+    "parse5": "^3.0.0",
     "unist-util-position": "^3.0.0",
     "web-namespaces": "^1.0.0",
     "zwitch": "^1.0.0"

test.js

@@ -70,7 +70,7 @@ test('raw', function (t) {
       u('doctype', {name: 'html'}),
       h('html', {lang: 'en'}, [])
     ])),
-    u('root', {data: {quirksMode: false}}, [
+    u('root', {data: {quirksMode: undefined}}, [
       u('doctype', {name: 'html', public: null, system: null}),
       h('html', {lang: 'en'}, [
         h('head'),