fixes and checks
fixes and checks

ethereum/pyethereum,harlantwood/pyethereum,ethermarket/pyethereum,karlfloersch/pyethereum,vaporry/pyethereum,karlfloersch/pyethereum,ddworken/pyethereum,pipermerriam/pyethereum,ebuchman/daoist_protocol,ebuchman/daoist_protocol,shahankhatch/pyethereum,pipermerriam/pyethereum,ckeenan/pyethereum,inzem77/pyethereum,jnnk/pyethereum,ethers/pyethereum,ethereum/pyethereum,holiman/pyethereum,shahankhatch/pyethereum