Update dev-dependencies

Author: wooorm

package.json

@@ -25,13 +25,13 @@
     "hast-util-is-element": "^1.0.0"
   },
   "devDependencies": {
-    "browserify": "^14.0.0",
+    "browserify": "^16.0.0",
     "esmangle": "^1.0.1",
-    "nyc": "^11.0.0",
-    "remark-cli": "^4.0.0",
-    "remark-preset-wooorm": "^3.0.0",
+    "nyc": "^12.0.0",
+    "remark-cli": "^5.0.0",
+    "remark-preset-wooorm": "^4.0.0",
     "tape": "^4.4.0",
-    "xo": "^0.18.0"
+    "xo": "^0.21.0"
   },
   "scripts": {
     "build-md": "remark . --quiet --frail --output",

test.js

@@ -1,7 +1,7 @@
 'use strict';
 
 var test = require('tape');
-var menuState = require('./');
+var menuState = require('.');
 
 test('menuState', function (t) {
   t.equal(menuState(), null, 'should return `null` without nodes');
@@ -84,17 +84,17 @@ test('menuState', function (t) {
   );
 
   t.equal(
-      menuState([
-        {
-          type: 'element',
-          tagName: 'menu',
-          properties: {type: 'context'}
-        },
-        null,
-        {type: 'element', tagName: 'menu'}
-      ]),
-      'toolbar',
-      'should not walk higher than non-elements'
+    menuState([
+      {
+        type: 'element',
+        tagName: 'menu',
+        properties: {type: 'context'}
+      },
+      null,
+      {type: 'element', tagName: 'menu'}
+    ]),
+    'toolbar',
+    'should not walk higher than non-elements'
   );
 
   t.equal(