fix NaN bug with empty messages in 1-segments
add print of cohens kappa and tests
Added newlines to the end of the Positive and Negative prediction fields.
Small changes to x-validation for performance
Merge branch 'master' of https://github.com/etcgroup/aloe
Merge branch 'master' into multiclass
balancing uses labels, but only binary
fix segment resolution, only for binary
extend evaluation for multi-class
finish converting and testing multiclass