title: Bleed variable amount outside of grid on one side only
body: <p>I am using susy2 for a project and I would like to include an image that bleeds outside of grid only on the left side and then spans 7 columns within the grid.  The problem is, I do not think I can just use bleed because the amount to bleed is not constant.  </p>
  
  <p>This diagram should better explain what I'm going for: <a href="http://i.stack.imgur.com/OFd6H.jpg" rel="nofollow">http://i.stack.imgur.com/OFd6H.jpg</a></p>
  
  <p>Thank you!</p>