Quizzy implementation-nl

[nickloomis]

Submitting sample code for PointOne's C++ capability check.

• The instructions for 'entropy' were not clear, especially the number of samples taken. I was working on the idea that you'd want to measure the entropy of some random source using the samples available in the source (instead of eight total samples).
• 'modeling' and 'similarity' touch on my background, so I went a tiny bit deeper for fun.
• 'strings' uses one definition for palindromes which allows for punctuation.
  I'm open to discussion, thanks!