Test continuous.
MajorityFitter returns ValueError when given Cont class.
MeanLearner predictor, widget and unit tests.
Changes to answer comments.
Merge pull request #126 from tomazc/majority_learner

Majority and Mean learners and unit tests
Fix a bug: data.has_weights is a method.
Merge pull request #132 from astaric/skl-weights

Fix a bug: data.has_weights is a method.
Added sklearn tree tests.
Tree Classifier
params
Merge pull request #128 from thocevar/tree

Added sklearn tree tests.
Improve test (avoid non-deterministic results).
Indices should be integers.
Test Learners widget (Orange.evaluation.testing.CrossValidation) calls StratifiedKFold.
Minor.
Minor.
Allow for minimal fold index start/stop differences.
Fix test.
Merge pull request #131 from tomazc/test_learners

Test Learners widget (evaluation.testing.CrossValidation) calls StratifiedKFold.
Fix a bug in tab reader.

Values were shifted in lines that began with an unknown value.