webpack security vulnerability

[ericlakich]

This repo is currently reporting a security vulnerability with the current webpack version used in this project. The full CVE is here: https://nvd.nist.gov/vuln/detail/CVE-2018-14732.

Known low severity security vulnerability detected in webpack-dev-server < 3.1.11 defined in package.json. package.json update suggested: webpack-dev-server ~> 3.1.11.