title: How to test an unsigned Firefox extension?
body: <p>Firefox 43 now enforces add-on signing. I don't understand how one is to test and debug an extension in these versions of Firefox prior to having the extension signed.</p>
  
  <p>If I'm writing a new extension, how do I go about testing the unsigned version in the latest versions of Firefox? Is there an explicit way to disable the signing enforcement for developers?</p>