Amqp-client-python

Features:
- Enable to set auto_ack of messages;
Fixes:
- handle of memory on event confirmation;
- Bug on way to set auto_ack, now on instantiation of channel;
- Memory leak on dict for each rpc_publish;

Features:
- Enable to set prefetch of messages;
- Enable to set uri as config option;
Fixes:
- Use a separate channel to publish and consume messages on rpc client and rpc provider;
- Raise timeout on publish confirmation;
- Variable channel can be None;

Features:
- Automatic creation and management of queues, exchanges and channels;
- Automatic reconnection;
- Support for direct, topic and fanout exchanges;
- Publish;
- Subscribe;
- Support for a Remote procedure call (RPC).