optimized chain tests
optimized chain tests

ckeenan/pyethereum,pipermerriam/pyethereum,ddworken/pyethereum,karlfloersch/pyethereum,ethereum/pyethereum,shahankhatch/pyethereum,pipermerriam/pyethereum,harlantwood/pyethereum,ethermarket/pyethereum,holiman/pyethereum,shahankhatch/pyethereum,vaporry/pyethereum,karlfloersch/pyethereum,ethereum/pyethereum,inzem77/pyethereum