Unreliable

I finally got it to work after using the wrong deps at first. However, now I notice that if you take the stock example file and change all the different people to one same person, it then creates and empty plot. If you then change the people names back to the originals it again produces and empty plot. There is something really wrong with this. Why is there a comma after one of the durations (but not others) in the example?

Use the stock example file as the reproduction case: first change all people to one person, then restore the original names, and observe the empty plot. Inspect how the example parses people, durations, and the comma noted in the issue. Done means both versions of the example produce a non-empty Gantt chart and the duration syntax is handled consistently.