start unity refactor
chg readme
refactor config
mv code into src
modify readme
pass fmatrix as const
check in io module
first version that reproduce binary classification demo
remake the wrapper
python module pass basic test
ok
check in softmax multiclass
check in rank loss
ok
make xgcombine buffer work
make it compatible with old code
fix omp
Merge branch 'unity' of ssh://github.com/tqchen/xgboost into unity
enforce putting iteration numbers in train
fix mac