title: Can I add additional file to my Firebase hosted static website, or must I deploy the entire site every time?
body: <p>We plan to host a fairly large set of static files with Firebase Hosting. Is it possible to deploy only new files to Firebase Hosting, without having the entire site available?</p>
  
  <p>We essentially want to do an "update" deploy, not a "full" deploy. We want to add files.</p>
  
  <p>The context: on every Travis build, we generate new docs, and want to add those docs to our site. We don't have the entire site available at that point, only the newly generated files.</p>
  
  <p>Thanks!</p>