title: Using mercurial, I added a new file and wrote code in it, then deleted that file. Can I retrieve it?
body: <p>Pretty much the title. I've looked at a lot of similar questions asked here, and I can't seem to find something that applies. </p>
  
  <p>Started by syncing with HEAD. Created a few new files. Filled in those files, they were being tracked at this point. I then not only deleted the files, but also removed them from being tracked (because of stupid UI). According to my understanding, those files are gone for good, but I thought I'd check with people who are smarter than me: Is it possible to retrieve them?</p>