ethminer 0.18.0-alpha.2 snapshot released!

https://github.com/ethereum-mining/ethminer/releases

it includes some speed improvement proposed by me
https://github.com/ethereum-mining/ethminer/pull/1734 - ptx inline-asm optimization
https://github.com/ethereum-mining/ethminer/pull/1741 - support cuda-8 win build / support OS X cuda build