node webpack 3 server-side hot module reloading

h/t scott moss and frontend masters

special thanks to Justin Searls for the best approach to TDD in javascript

Dependencies

• node v9.2.0
• webpack v3.6.0
• mocha v4.0.1
• mocha-webpack v1.0.1
• should v13.1.3
• testdouble v3.2.6
• bluebird v3.5.1
• eslint v4.12.1
• express v4.16.1

Features

• server-side hot module reloading
• blazing fast concurrent linting and unit testing