Initial pre-release

This is an initial pre-release version of Swift Science. It contains:

• Three probability distributions types. All three fully embrace generics to let you strike your own balance between precision and performance. Sample random values from them and compute distribution statistics/probabilities.
  • Normal
  • Bernoulli
  • Poisson
• Fourteen probability distribution protocols, paving the way for many more distributions to be added in the future. These protocols also allow clients to more easily define their own custom distributions.
• Methods to compute the sum, mean, sample variance, and population variance of any Collection for which these statistics are defined; even for complex numbers.
• A few mathematical utilities.
• And, of course, documentation built using DocC.

Try it out!