2.0.5 Codename Random

🎉 Habemus more discrete distributions! 🎉.

This change address #4 adding the following discrete distributions:

• Negative Binomial Distribution
• Geometric Distribution
• Bernoulli Distribution
• LogSeries Distribution

It also introduces a minor fix to the mean of the beta distribution 😁. There is a case where alpha and beta can be zero, which is not defined for the calculation.

Happy Stats!
Esteban.