Update dependencies to enable Greenkeeper 🌴

.babelrc

@@ -1,6 +1,6 @@
 {
-    "presets": [ "es2015" ],
-    "plugins": [ "transform-runtime", "add-module-exports" ],
+    "presets": [ "@babel/preset-env" ],
+    "plugins": [ "@babel/transform-runtime", "add-module-exports" ],
     "env": {
         "test": {
             "plugins": [ "istanbul" ]

.nycrc

@@ -1,6 +1,6 @@
 {
     "require": [
-        "babel-register"
+        "@babel/register"
     ],
     "sourceMap": false,
     "instrument": false,

.travis.yml

@@ -1,8 +1,8 @@
 language: node_js
 node_js:
-  - "8.8"
-  - "6.1"
-  - "4.4"
+  - "8"
+  - "10"
+  - "12"
 
 script: "npm run ci"
 after_script: "cat ./coverage/lcov.info | coveralls"

README.md

@@ -1,5 +1,5 @@
 [![Build Status](https://travis-ci.org/rmdm/nodups.svg?branch=master)](https://travis-ci.org/rmdm/nodups)
-[![Coverage Status](https://coveralls.io/repos/github/rmdm/nodups/badge.svg?branch=master)](https://coveralls.io/github/rmdm/nodups?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/rmdm/nodups/badge.svg?branch=master)](https://coveralls.io/github/rmdm/nodups?branch=master) [![Greenkeeper badge](https://badges.greenkeeper.io/rmdm/nodups.svg)](https://greenkeeper.io/)
 
 nodups
 =====

karma.conf.js

@@ -38,7 +38,8 @@ module.exports = function(config) {
         [
           'babelify',
           {
-            presets: ['es2015'],
+            presets: ['@babel/preset-env'],
+            plugins: [['@babel/plugin-transform-runtime', { corejs: 3 }]]
           }
         ]
       ],