Aux band support #1238

Job	Run time
build-test-env-base	12s
build-binder-env	11s
build-wheels	15s
build-notebooks	7s
run-mypy	39s
run-pylint	32s
run-black-check	13s
test-wheels	24s
test-with-botocore-and-coverage	24s
check-docs	38s
	3m 35s

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