S3StreamWritable bug fix #139

Job	Run time
run-tests (fixtures)	1m 21s
run-tests (http)	1m 39s
run-tests (http_typesafe)	1m 33s
run-tests (json)	1m 24s
run-tests (typesafe_app)	1m 45s
run-tests (monitoring)	1m 51s
run-tests (monitoring_typesafe)	1m 41s
run-tests (messaging)	3m 19s
run-tests (messaging_typesafe)	1m 36s
run-tests (storage)	2m 28s
run-tests (storage_typesafe)	2m 8s
run-tests (elasticsearch)	1m 57s
run-tests (elasticsearch_typesafe)	1m 29s
run-tests (sierra)	1m 50s
run-tests (sierra_typesafe)	2m 4s
	28m 5s

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