Import some data sets for students to analyze

One place where CodeWorld misses the common core math standards is in data analysis. Our simple little universe is, alas, too simple to contain enough data for statistics or data visualization. That's too bad, because it could be a great setting to play with these things. Mathematica, by contrast, is amazing in this respect. It has, built in, all manner of different data sets that can be easily analyzed and used in things created there, and Wolfram has written compellingly on how this can be a game-changer for applying the technology in classrooms.

I propose that CodeWorld offer some extra modules with data sets as well. Which data sets we pick may not even matter! There should just be some interesting ones. For instance, data on the brightest stars (which is available in the public domain from NASA).

These would not be in the codeworld-base `Prelude`. For this, I'm willing to teach import syntax.