This distribution reformatting has the following benefits:
- The min and max of a given bin are clearly stated.
- Permits statistics with bins of different sizes or sparce bins.
- The 'numBins' and 'binSize', 'min', and 'max' stats are no explicitly
(and redundantly) stated. They may be derived easily if needed.

Co-authored-by: Jason Lowe-Power <[email protected]>

* Added new properties of a Distribtion
* Allowed the value of a distribution to be an array of numbers. This
allows for a simple distribution with a fixed bin size, starting from
zero.