The following changes were made just to the author list:
I added myself "Christopher Tunnell" and my institute "University of Chicago".
Furthermore, there were no commas after a few other names toward the end that I added for consistency
The "and" I assume happens with the last name in alphabetical order. Since "Tunnell" is after "Stewart", I moved the 'and' to my name as the last alphabetically.
The following changes were made just to the author list: