title: SVN change username
body: <p>I found a lot of examples on how to change the username for specific revisions and so on.</p>
  
  <p>But what I need is this:
  I did a checkout with the authentication credentials of a workmate and need to change it to my credentials for future commits.</p>
  
  <p>I cannot just checkout with my credentials due to the many changes that have been done already...</p>
  
  <p>Anyone familiar with this?</p>