Update dev-dependencies

Author: wooorm

build.js

@@ -8,7 +8,7 @@ var html = require('rehype-parse');
 var q = require('hast-util-select');
 var toString = require('hast-util-to-string');
 var bail = require('bail');
-var list = require('./');
+var list = require('.');
 
 https.get('https://html.spec.whatwg.org/multipage/syntax.html#elements-2', function (res) {
   res.pipe(concat(onconcat)).on('error', bail);

package.json

@@ -26,17 +26,17 @@
   "dependencies": {},
   "devDependencies": {
     "bail": "^1.0.0",
-    "browserify": "^14.1.0",
+    "browserify": "^16.0.0",
     "concat-stream": "^1.6.0",
     "esmangle": "^1.0.0",
     "hast-util-select": "^1.0.1",
     "hast-util-to-string": "^1.0.0",
     "rehype-parse": "^4.0.0",
-    "remark-cli": "^3.0.0",
-    "remark-preset-wooorm": "^3.0.0",
+    "remark-cli": "^5.0.0",
+    "remark-preset-wooorm": "^4.0.0",
     "tape": "^4.0.0",
     "unified": "^6.1.5",
-    "xo": "^0.18.0"
+    "xo": "^0.20.0"
   },
   "scripts": {
     "build-md": "remark . -qfo",
@@ -51,6 +51,10 @@
   "xo": {
     "space": true,
     "esnext": false,
+    "rules": {
+      "no-var": "off",
+      "prefer-arrow-callback": "off"
+    },
     "ignores": [
       "html-void-elements.min.js"
     ]

test.js

@@ -1,7 +1,7 @@
 'use strict';
 
 var test = require('tape');
-var htmlVoidElements = require('./');
+var htmlVoidElements = require('.');
 
 test('htmlVoidElements', function (t) {
   t.ok(