title: jedi-vim return to old position after jump with goto assignments/definitions
body: <p>I'm using vim with <code>jedi</code>/<code>jedi-vim</code> when I develop python code and I use extensively <code>&lt;Leader&gt;d</code> (goto definitions) and/or <code>&lt;Leader&gt;g</code> (goto assignments). I can use <code>''</code> to return to the line before the jump, but only within the same file.</p>
  
  <p>Is there a way to have the same behaviour when jumping between different files?</p>