Use a case class for SVD instead of a tuple
case classification of QR/eig/etc
generification of several FeatureVector ops
transpose multiplicaiton for feature vectors
remove scalalogging
Merge pull request #288 from mengxr/remove-scalalogging

remove scalalogging from dependencies
Merge branch 'master' of https://github.com/scalanlp/breeze into understandDataStructures
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