knn example
add Chiyuan Zhang's multiclass notebooks
use dmcs instead of gmcs to run c# examples
rename to not have spaces
Fix memory leak due to SGVector::clone in KNN
add LOOxval
improve KNN notebook
add small comparison section to MC svms
improve naive bayes tutorial
add chiyuan's multiclass reduction notebook
Clear output cells in notebooks
Merge pull request #1798 from iglesias/develop

Fix memory leak due to SGVector::clone in KNN
add stdxval inheritance to loo
update looxval example
update splittingstrategy tests
update splittingstrategy tests
Merge pull request #1799 from Saurabh7/loocrossval

add LOOxval
Merge pull request #1797 from Saurabh7/xvalexamples

knn example
Merge pull request #1802 from Saurabh7/xvaltests

update Xvaltests
Fix leak in KNN::store_model_features, duplicate increases ref count