v1.4.0

 - [New] add support for `util.inspect.custom`, in node only
 - [Tests] up to `node` `v8.8`; use `nvm install-latest-npm` to ensure new npm doesn’t break old node
 - [Tests] add `npm run coverage`
 - [Dev Deps] update `core-js`, `tape`

package.json

@@ -1,6 +1,6 @@
 {
   "name": "object-inspect",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "description": "string representations of objects in node and the browser",
   "main": "index.js",
   "devDependencies": {