FIX : omp default param could fail
ENH : use local seed + avoid warning
DOC: Replace GT/LT with angle brackets for inner product
Merge pull request #3217 from bwignall/innerprod

DOC: Replace GT/LT with angle brackets for inner product
ENH Dense pipeline support for RandomTreesEmbedding via sparse_output param
ENH: use partial sort for kneighbors selection
CLN: Fix typo
Merge pull request #3225 from bwignall/quickfix-typo

CLN: Fix typo
ENH: make trees work with very small max_features.

Trees do no longer fail if int(max_features*n_features) == 0, but use
max_features=1 if the max_features paramater was larger than 0.0

Fixes #3171.
TST skip flaky label propagation test

The optimization in 46aebf132b65e9a6c54b2747c864c6401cd5c56f broke
a test that relied on the exact ordering of k-NN in a test on a minute
dataset.
CLN: Capitalize "Gaussian" in example docstrings
Merge pull request #3176 from agramfort/omp_default

MRG : omp default param could fail
Merge pull request #3230 from bwignall/quickfix-gaussian

CLN: Capitalize "Gaussian" in example docstrings
CLN: Capitalize "Dirichlet" and "Mexican" in example docstrings
Merge pull request #3231 from bwignall/quickfix-cap

CLN: Capitalize "Dirichlet" and "Mexican" in example docstrings
MAINT: run tests on files with the exec bit
Merge pull request #3234 from ogrisel/nosetests-exe

[MRG] MAINT: run tests on files with the exec bit
Implemented and tested _validate_labels for preliminary changes to label.py designed to introduce support for sparse output
Updated doc test with sparse param for LabelBinarizer
Label verification in LabelBinarizers transform() - with testing