Fix zero timeout for watch-polling (high cpu usage).
kick travis
Merge pull request #155 from evoskuil/version2

Fix zero timeout for watch-polling (high cpu usage).
Quick fix to accomodate libbitcoin array_slice signature changes.
Implement support and stub in test for deterministic signture.
Merge pull request #156 from evoskuil/version2

Quick fix for bc::array_slice, stub in deterministic input-sign.