Created by: vicdoval
Bounding box node: Numpy implementation ( 2x to 10x boost) Mutilevel Recursive node. Refactored to split ui from algorithm
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Code changes complete.  - 
Code documentation complete.  - 
Documentation for users complete (or not required, if user never sees these changes).  - 
Manual testing done.  - 
Unit-tests implemented.  - 
Ready for merge.