v0.6.4

Adds Amazon SQS broker using Boto3

# example SQS broker connection

Q_CLUSTER = {
    'name': 'SQSExample',
    'workers': 4,
    'timeout': 60,
    'retry': 90,
    'queue_limit': 100,
    'bulk': 5,
    'sqs': {
        'aws_region': 'us-east-1',
        'aws_access_key_id': 'ac-Idr.....YwflZBaaxI',
        'aws_secret_access_key': '500f7b....b0f302e9'
    }
}