is there a plan to support `async with`

I noticed that we should close the zmq stream by function close.is there a plan to use async with like:
```python
async with aiozmq.create_zmq_stream(
zmq.PAIR,
bind=addr) as server:
while True:
server.write(b"Server message to client")
try:
data = await server.read()
except asyncio.CancelledError:
break
print("Async server read: {data}".format(data=data))
asyncio.sleep(1)
```