ENH: remove offset calculations
ENH: use memset and memcpy when possible
ENH: make sort an inline nogil function
ENH: make node_reset/split/value gil-free
ENH: use npy_int32 type
bug fixes in graph_lasso and moving non-custom log-likelihood definition to specific definition of cost
corrected sign error in _objective
pep8 compliance
ENH refactor squared-norms computation to extmath

k-means can now use the memory-efficient dense implementation from
metrics.pairwise, while pairwise can use the fast sparse implementation
from k-means.
ENH use row_norms in KDE code

There may be other places where it is useful.
COSMIT remove dead code in k-means

Private functions _k_init and _kmeans_single were doing too much work.

Should improve the relative coverage.
Merge branch 'refactor-squared-norms'
ENH honor Y_norm_squared when X=Y in euclidean_distances

Also a micro-optimization to row_norms.
COSMIT use norm function in feature selection
MAINT simplify f_oneway in feature selection

reduce(lambda x, y: x + y, s) == sum(s), always.
adds minutes + seconds to examples
cosmetic - shorten long line
add copybutton to code examples
Making the results NaiveBayes example more explicit
remove writing of minutes/seconds