Updated flat()
Merge branch 'master' of https://github.com/biometrics/openbr
Merge branch 'master' of https://github.com/biometrics/openbr
Maybe fixed cross validation bug?
Merge branch 'master' of https://github.com/biometrics/openbr
Merge branch 'master' of https://github.com/biometrics/openbr
Merge branch 'master' of https://github.com/biometrics/openbr
Merge branch 'master' of https://github.com/biometrics/openbr
Merge branch 'master' of https://github.com/biometrics/openbr
Merge branch 'master' of https://github.com/biometrics/openbr

Conflicts:
	openbr/openbr_plugin.cpp
Merge branch 'master' of https://github.com/biometrics/openbr
CrossValidation with same training across all splits