Fixes #51. Instead of passing in an array of hard coded values as the interval end points, an object specifying the beginning, the end, and the step size is used. Categories can be more easily defined and modified this way.
Fixes #51. Instead of passing in an array of hard coded values as the interval end points, an object specifying the beginning, the end, and the step size is used. Categories can be more easily defined and modified this way.