Figuring out how to do a repeat in oneOrMore.
Getting closer on HW11 e2 - but can't figure out how to handle the recursion.
Finally peaked at solution to HW11 e1.  I understood that I was trying
to figure out how to do recursion and that I was doing mutual recursion,
but it would have took forever for me to find the Control.Applicative
solution.  Once that was in place, exercise 2 was a snap.
Working on HW11 e3.  Stuck on recusion again.