Thoughts on offloading some string methods to lodash modules.

As y'all know Lo-Dash v3 is adding 17 string methods, also available as [individual npm packages](https://github.com/lodash/lodash/tree/npm-packages):

```
_.camelCase, _.capitalize, _.deburr, _.endsWith, _.escapeRegExp, _.kebabCase, _.pad,
_.padLeft, _.padRight, _.repeat, _.snakeCase, _.startsWith, _.trim, _.trimLeft, _.trimRight,
_.trunc, & _.words
```

With that brings the opportunity for underscore.string to offload to those packages instead of maintaining duplicate implementations. Thoughts, opinions?