Sort event values
Remove TODO comment

This comment shouldn't be committed.  It's just for my own purposes.
Add Alma's arrival in Zarahemla

I'm a little confused on the timing between Alma, Ammon and Limhi.  I
think this segment is right, but I could stand to review it a couple
more times and cross check all my references.
Build target for PNG

PNG is usually the output that I prefer to build.  I might as well
have a target specifically for it to handle all dependencies.