* Switch Boto2 to Boto3 for SQS messaging
* Fixed region support
* Add SQS FIFO queue support
* Add sensible defaults for message attributes
* Asynchronous support, plus boto3 for region endpoint lookups
* Clean up imports
* Fix Python 2 support
* Fix receive_message tests
* Reformat docstring
* boto3 import changes for CI
* skip tests if boto3 not installed
* skip tests if boto3 not installed
* flake8
* noboto
* ditching boto2. got queue URL fetching, async HTTP request generation and signing working.
* request signing working kinda
* async parsing of SQS message response more or less working
* botocore sqs dep
* ripping out more old boto2 stuff
* removing tests that are no longer valid with boto3/SQS
* fix boto3 dep, min version and no botocore
* no boto2 for test
* cleaning up some SQS tests. fixing header parsing of response to msg
* fixing some sqs tests
* removing response-parsing tests that are no longer necessary as we're using the botocore response parsing machinery instead of implementing SAX parsing in kombu.
* fixing more SQS tests
* wants a region
* trying to fix py2 parsing of sqs message
* lint
* py2/py2 message header parsing stupidness
* forgot
* python 2 sux
* flake8
* Import boto3 from the right place
* Changes
* Update encode fuction
* Fix lint
* remove some unused things
* removing unused stuff
* ugh
* ugh
* ugh
* landscape ignoring
* shut up, landscape
Anthony Lukach