remove unnecessary import, eliminate warning
partial implementation of histogram, doesn't handle weights
remove unnecessary import, eliminate warning
Merge branch 'master' of github.com:scalanlp/breeze
unnecessary comment
Created visitor for zipping values
4 argument implementations
histogram handles weights
Histogram now returns case class, with bin edges.
Merge pull request #213 from stucchio/hist

Histogram
meanAndVariance now has a more descriptive return type.
Merge pull request #215 from stucchio/cleaner_return_type

meanAndVariance now has a more descriptive return type.
generic nightmare
unique implementation
Generics working
Merge pull request #216 from stucchio/unique

unique implementation
Merge pull request #209 from ktakagaki/signal

Signal
do not use BitSet.valueOf which is java 7 only
fix for serialization issue in kryo (stackoverflow error)
Merge pull request #219 from tresata/feat-java6only

do not use BitSet.valueOf which is java 7 only