Implement a bunch of RNG tests including K-S test
Remove console.logs and add more comments
Remove unused code
Remove @author in comment
Use seed random to seed Math.random
More comments
Better var names and comments
Use a proper lognormal CDF approximation
Merge branch 'random-tests' of https://github.com/DanGoldbach/d3 into random-tests
Restore Math.random on teardown.
Actually use seedrandom.

The tests are run in a sandboxed environment, and so didn’t have access to the
same global Math whose random was being overridden.