added smoothing.m to niche/functional
added smoothing.m to niche/functional

minhpqn/mlpack,Azizou/mlpack,ajjl/mlpack,trungda/mlpack,Azizou/mlpack,trungda/mlpack,thirdwing/mlpack,lezorich/mlpack,stereomatchingkiss/mlpack,chenmoshushi/mlpack,bmswgnp/mlpack,thirdwing/mlpack,stereomatchingkiss/mlpack,thirdwing/mlpack,ajjl/mlpack,theranger/mlpack,datachand/mlpack,erubboli/mlpack,Azizou/mlpack,chenmoshushi/mlpack,lezorich/mlpack,datachand/mlpack,erubboli/mlpack,lezorich/mlpack,ersanliqiao/mlpack,ersanliqiao/mlpack,BookChan/mlpack,minhpqn/mlpack,ranjan1990/mlpack,datachand/mlpack,ranjan1990/mlpack,theranger/mlpack,darcyliu/mlpack,theranger/mlpack,erubboli/mlpack,palashahuja/mlpack,ersanliqiao/mlpack,ajjl/mlpack,BookChan/mlpack,ranjan1990/mlpack,darcyliu/mlpack,stereomatchingkiss/mlpack,palashahuja/mlpack,bmswgnp/mlpack,palashahuja/mlpack,BookChan/mlpack,minhpqn/mlpack,chenmoshushi/mlpack,darcyliu/mlpack,trungda/mlpack,bmswgnp/mlpack