New branch tree created
Entropy functions
Reset filtering process to new values
Created Entropy module
New Class called ClassesSet to represent classes in a decision tree
:)
Modifications
Structure Changes
BestSplit
Merge branch 'stream-tree-learning/tree' of
https://github.com/aecc/stream-tree-learning into entropy

Conflicts:
	src/main/scala/TreeBuilding.scala
Change structure