Tester has Cantaloupe, Cherry, and a Food list now.
issue found: nutrients doesn't populate cantaloupe

Further analysis required.  Test cases beneath both work, proves
add("blah") syntax works for ArrayList<String>, and further proves even
works with add( new Water(90) ) for ArrayList<Nutrient>.  Not sure if
this style of syntax initialization is called initializer block applies.
Clearly the goal was to find the most concise syntax with least
undesirable effects.