Enhanced diffs

FYI:

I just fixed the bug (worked around the problem) that caused PRE
elements to be formatted incorrectly in diffs. Re-running the
Travis build on your favorite branch(es) is all you need to do,
there's nothing new to pull.

                                        Be seeing you,
                                          norm

-- 
Norman Walsh
Lead Engineer
MarkLogic Corporation
Phone: +1 512 761 6676
www.marklogic.com