`asyncio.JoinableQueue` was deprecated in Python 3.4.4. `iamine.core.Miner` now uses `asyncio.Queue` for Python 3.4.4 and newer and `asyncio.JoinableQueue` for older versions (`asyncio.Queue` cannot be used for all versions because `asyncio.Queue.join()` was only added in version 3.4.4.).
`asyncio.JoinableQueue` was deprecated in Python 3.4.4.
`iamine.core.Miner` now uses `asyncio.Queue` for Python 3.4.4 and newer
and `asyncio.JoinableQueue` for older versions (`asyncio.Queue` cannot
be used for all versions because `asyncio.Queue.join()` was only added
in version 3.4.4.).

Fixed bug in `iamine.SearchMiner` where loop was being closed before the
request queue was empty.

dattasaurabh82/iamine,jjjake/iamine,JesseWeinstein/iamine