change interface: shared_ptr<FTPRL> -> FTPRL*
Merge branch 'master' into python
debug: public access of FTPRL::Matrix
refactor: expose py class to pxd
refactor
remove import numpy since it is imported in matrix.pxd
implement update in cython. Face a bug of openmp.
debug: racing condition of pred
debug: invalid controlling predicate
Merge branch 'master' into python
refactor: put the type in argument
implement: update and predict
refactor: move src to ftprl
implement getNInstance
implement test script for FTPRL logistic regresion
implement update predict for logistic regression