added first version of out-of-core example
revision round #1 (move to examples/applications, 1 file, auto-download dataset)
pep8 / pep257 compliant formating
get rif of feature dicts, leverage HashingVectorizer class directly
plot as both a function of time and n_examples
using print() function
improve explanations on out-of-core learning paradigm
improve explanations on example structure
fixed use of docstrings + added section in whats_new.rst + added data dir to .gitignore
more robust data location
COSMIT refactor cross-validation strategies
Include LeavePLabelOut in refactoring
A further refactor
COSMIT Base class for KFold/StratifiedKFold validation
COSMIT make BaseKFold abstract
COSMIT Base class for [Stratified]ShuffleSplit
use same, separate held-out data to estimate accuracy after each mini-batch
ENH: Added input checks in confusion_matrix

Also added confusion_matrix to metric tests
DOC fix docstring headings
ENH: removed leftover condition to get a wider application of the import all consistency check