BUG: set random state in LogisticRegression
DOC clarification in Scoring objects: Its not a good sign if I don't understand my own wording.
FIX bug in f_score with beta !=1
FIX formula inversion for sample-based precision/recall
FIX set same default behavior for precision, recall and f-score
FIX helper to check multilabel types

Fixes bugs related to simply checking type(..) equality, and refactors.
Fix, document and test check_multilabel_type
Rename check_multilabel_type -> is_multilabel and rewrite

Rewrite no longer does shape checks
Remove old implementation(!)
Fix use of changed return value
Test strings in multilabel
ENH support multilabel targets in LabelEncoder

Also, support 1d-array of sequences as a multilabel format
Simplify precision_recall_fscore_support

Also, deprecate pos_label in favour of neg_label
Avoid floats for counts
More robust template
TST Use assert_almost_equal in test_symmetry
Fix unusual cases for tests
Ravel in checking arrays
Add comments
Fix validation