v0.1.2

Added

• Queue::wait_timeout() and an option controlling the queue size.
• Asynchronous object open and close, and retry of interrupted connects.
• Version header and this changelog.

Changed

• librawstorstd and librawstorio are renamed to librawstd and librawio.
• RawstorObject is redefined, and the command id moves to the head of the request frame.

Fixed

• Graceful vhost disconnect.
• Error handling in the OST session.