Changes made to CREClass.m
Here I've added an alternative calculation for the Relevance Boundary.
CalcRBShannon is now part of the CREClass.m file.
The TestCREClass has been updated to allow testing this new feature.
NB: this is work in progress
CCRE class is now "more logical" from a programing point of view.
Created a fucntion to create the bin-edges for the reference function.
"condensed" the calc function (removed redundancies)
Now first the edges are calculated based on the two paramters: EqualSizeBinFlag and UseHistProxy.
Once edges for bins are known (calculated) creating the cdf is the same for all cases.