extend multiclass nb
fix argument
add titles,cleanup
OvO plots
Added different number of samples for quadratic time MMD
fix include config.h in SGRefObject
fix null spectrum approximation formula in quadratic time MMD
pca ipython notebook revised 3rd time
Merge pull request #2004 from Saurabh7/mcnb

extend multiclass nb
Merge pull request #2022 from lambday/develop

Added different number of samples for quadratic time MMD
Merge pull request #2028 from kislayabhi/develop

pca ipython notebook revised 3rd iteration