Add Long specialization to Storage (it is used in classes with Long specialization downstream)
Organize unneeded imports
Reading through code to understand data structures (edit documentation, variable naming consistency)
some more consistency
Storage.scala specialization?
minor diff Storage.scala
Should norm be deprecated from NumericOps.scala?
more refactoring and documentation
deprecated NumericOps.norm() in favor of UFunc
Specialize breeze.linalg to Long as well
activeSize/iterableSize doc comments from David
minor import streamline
Merge branch 'master' of https://github.com/scalanlp/breeze into understandDataStructures
Document, understand, organize
Merge branch 'master' of https://github.com/scalanlp/breeze into understandDataStructures

Conflicts:
	math/src/main/scala/breeze/linalg/CSCMatrix.scala
	math/src/main/scala/breeze/linalg/HashVector.scala
	math/src/main/scala/breeze/linalg/SparseVector.scala
	math/src/main/scala/breeze/linalg/Tensor.scala
merging some more unnecessary imports
Merge pull request #287 from ktakagaki/understandDataStructures

Document Data Structures