title: Make WordPress User Name the Email Address
body: <p>Is it possible to make WordPress user name the Email Address?</p>
  
  <p>So unername could be hidden or not required and is replaced with email address.</p>
  
  <p>I know there are plugins that can allow users to use their email as the log in, but they still have to enter the username when they register. I want to try and do away with the username.</p>