writing script based on waterfilling till peaks disappear to find all local max.  imdilate or imregionalmax work better.
first crude implementation of findclusters, with residual local max and minimum finding still embedded
fspecial extended to 3d by Damien Garcia (CRCHUM)
first proper function version of findclusters3D
udates to 3D clustering algorithm, new cdf comparative plotting command
updated readme, added new normalized histogram plotting function.