MATLAB Class Version of the Fukunaga-Koontz Transform

Similar to a previous submission, but implemented as a MATLAB class rather than a function.

The Fukunaga Koontz transform (FKT) is a linear transform that can be applied to a
dataset X derived from a set of objects that are each classified into one of two classes. X is
an N x L matrix where each row corresponds to an object and each column is a real valued
attribute of the object. In the transformed space the attributes that are the most important for class 1 are the least for class 2 and vice versa.

In a previous submission, the FKT is implemented as a MATLAB function. This version provides a MATLAB class called FKTengine. The class includes a setup method that creates the transform matrix, sorting the transform matrix according to the associated eigenvalues, and a transform method. This submission also includes a demo script.