title: Mercurial and particular files branching
body: <p>The context: i have a project, that contains <code>configs/</code> directory, which contains (surprise-surprise!) a set of config files: <code>database.php</code>, <code>facebook.php</code>, <code>twitter.php</code>, <code>cache.php</code>, etc</p>
  
  <p>What I did in <code>svn</code>: I have created branches per specific file and made changes there (changed database connections, facebook API keys, etc). So they were stored in my private branch.</p>
  
  <p>Now I'm trying to migrate to "modern" nowadays DSCM - Mercurial. And I cannot get any possibility of doing the same.</p>
  
  <p>Any ideas?</p>