Version 2.6
- cluster.kmeans: added support for fuzzy clustering (property "prob")
- regr.lm: removed some erroneous param settings
- regr.glmnet: added 'family' param and allowed 'gaussian', but also 'poisson'
- disabled plotViperCharts unit tests as VC seems to be offline currently
- multilabel: improve few task getter functions, especially getTaskFormula is
now correct
new learners
- regr.glmboost
- cluster.Cobweb