Content body in multiple frames (amqp-0.9.1 4.2.6.2)

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When the content of a body frame is bigger than the supported size of the server, send it will result in a connection resetted by peer and the following error message :
aioamqp.protocol: WARNING: Server closed connection: FRAME_ERROR - type 3, all octets = <<>>: {frame_too_large,1000000,131064}, code=501, class_id=0, method_id=0

Trying to receive it will only process the first body frame of the message.

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All the previous commits are stashed in the last one.