BCX Project Update 022

Hello all BCXers! This is project update 022. BitcoinX 0.16.2 has added the smart contract function, which requires the miners vote to activate. (The voting period is 2016 blocks) 

Currently vvpool and beepool have been updated to the latest version, please update ASAP! 

[Core/dev] Have fix the incorrect display bug in the interface

[Core/dev] Have fix the occasionally integer overflow problem on the mac platform

[Core/dev] Have fix the occasionally memory out-of-bounds access problem on the mac platform

[Core/dev] Have analyze the code static and check the security

[Core/dev] The latest version of Ethereum Casper, PoW/PoS hybrid system code in research and development