single mode added to shannon letters #41

Job	Run time
Test (3.12)	3m 2s
deploy / Setup	35s
deploy / deploy-staging / build-aws / Build (staging)	1m 8s
deploy / deploy-staging / build-gcp	0s
deploy / deploy-production	0s
deploy / deploy-staging / deploy-gcp-staging	0s
deploy / deploy-staging / deploy-staging-aws	0s
	4m 45s

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