title: Best way to check diff file by file between 2 branches/commits?
body: <p>I just finished a fairly large branch that I've been working on for over 2 months.  I just rebased master into it and had to resolve a handful of conflicts.  Now that I have rebased my feature branch, how can I go through file by file to see the highlighted differences of that compare on the featured branch compared to the master branch to make sure the rebase was done correctly?</p>