Aliasing Distribution Causes Namespace Collision (estebanz01#46)

* Aliasing Distribution Causes Namespace Collision

**Description**
The gem loads prior to the main application code and aliasing the gems
namespace to a root namespace creates conflicts with main app. This
update removes the aliasing to prevent this from happening.

**Relates to Issue**
estebanz01#45

* Version 3.0
removes distribution namespace aliasing

**Description**
This update remove the `Distribution` name space aliasing. To avoid
issues it is recommended that any references to `Distribution` are
replaced with the full name path `Statistics::Distribution` to avoid any
disruption.

Co-authored-by: Rebecca Chapin <msneverheart@gmail.com>
Co-authored-by: Rebecca Chapin <rchapin@Rebeccas-MacBook-Pro.local>

Version 2.1.3

version: Bump to version 2.1.2.

This change includes a fix for estebanz01#32! 🎉.

version: 2.1.1.

Include the Inverse Standard Normal distribution function.

Version 2.1.1

Version 2.1.0

Version 2.0.5

Version 2.0.4

version: Update to 2.0.3.

Version 2.0.2