Add SeqDrift and update FIMTDD
Added current files.

Removed dependency on apache commons for kmeans.
Need to implement chi square cdf to avoid math3 dependency.
Reworked the BasicCluster implementation. This is simply a cluster that
keeps track of the instances in that cluster. Maybe there is a more
'moa' way to do this. Whatever, I will get to that and refactor when I
have a working outlier detector.
Refactored to reflect that the distribution could be provided by some
other cdf than chi square.
Added SPLL Test class.
Refactored the oddly named KMMAdapter to KMeansAdapter.
Added ChiSquareAdapter. Changed degrees of freedom to int in
CumulativeDistributionFunctionProvider interface.
Reworked the test to work without the implementation of
processNewStreamObj. This will be refactored later. Currently the bug is
to do with the k-means clustering. This really needs to be apache
commons math3, I have no idea what the moa implementation is actually
good for.
Class stub for KMeans++
Quick and dirty adaptation of kmpp from apache commons. Very sub
optimal. Will replace with actual dependency hierarchy when I get around
to it.
Being annoyed by the lack of a central place for distance functions, I
have made a package called moa.distance. Ideally this is where things
should reside, but perhaps I will follow suit with everyone else and
just keep my nik-naks in the respective algorithm package.
Added a constructor that takes a single instance as the centre.
Added apache commons-math3 as a dependency. If it needs to be removed,
will reverse engineer the parts we're using.
Replaced KMeansAdapter with ApacheKMeansAdapter
Added chi square adapter for apache commons
Fixed an unintended IndexOutOfRange exception that occurred when an
empty cluster was created. Whether to allow empty clusters is another
matter.
Changed clusterprovider to return a list of InstanceRetainingCluster
Switched out adapters for new ones. Replaced instances of cluster with
InstanceRetainingCluster.

Trying to induce change in the RBF generator that can be detected.
Removed debug leftovers
Removed KMeansPlusPlus adaptation as Albert has indicated that an apache
commons math3 dependency is acceptable.