title: Sublime Text edits since last save
body: <p>Can't seem to find anything online.   Frequently spend time editing multiple text documents at the same time and loose track of which ones I have edited.  When I close I am not always sure whether I have purposefully changed or accidentally edited a character in a file.   Would be great to have a feature to show the edits since last save for sublime text.    </p>
  
  <p>Seems like such an obvious need that I am surprised that I cannot find anything in features.  Am I missing something or am I the only one with this need?</p>