Comment 2 for bug 1022965

I encountered the need for field-array and timestamp decoding when consuming expired messages sent to dead letter exchange. I've got a working patch that adds just field-array and timestamp decoding, but then I saw this and gave it a try since it appears to have a comprehensive support for new data types introduced in amqp 0-9-1. However, the patch has a bunch of errors (pylint finds them all, btw). Attached is modified patch with these errors fixed.