improve shuffling
improve shuffling

lontivero/NBitcoin,you21979/NBitcoin,MetacoSA/NBitcoin,bitcoinbrisbane/NBitcoin,HermanSchoenfeld/NBitcoin,dangershony/NStratis,NicolasDorier/NBitcoin,stratisproject/NStratis,MetacoSA/NBitcoin,thepunctuatedhorizon/BrickCoinAlpha.0.0.1