title: git, filter-branch on all branches
body: <p>I'm using the following sources to expunge some large files and directories from my repository:</p>
  
  <p><a href="http://dound.com/2009/04/git-forever-remove-files-or-folders-from-history/" rel="noreferrer">http://dound.com/2009/04/git-forever-remove-files-or-folders-from-history/</a></p>
  
  <p><a href="https://stackoverflow.com/questions/1029969/why-is-my-git-repository-so-big/1036595#1036595">Why is my git repository so big?</a></p>
  
  <p><code>git filter-branch</code> only seems to work on the current branch - is there a way to apply it to all branches at once?</p>