add withFilter to Rand.
add withFilter to Rand.
tjhunter/scalanlp-core,tjhunter/scalanlp-core,mredaelli/breeze,ktakagaki/breeze,calippo/breeze,eponvert/breeze,cilier/breeze,claydonkey/breeze,ContentSquare/breeze,scalanlp/breeze,crealytics/breeze,nikdon/breeze,chen0031/breeze,sheide/breeze,ktakagaki/breeze,wstcpyt/breeze