Makes oracles more friendly to use as library (#844) #209

Job	Run time
build	3m 57s
clippy	1m 52s
fmt	11s
tests (coverage-map)	1m 20s
tests (file-store)	1m 54s
tests (ingest)	1m 59s
tests (coverage-point-calculator)	1m 28s
tests (mobile-packet-verifier)	2m 39s
tests (reward-scheduler)	52s
tests (task-manager)	55s
tests-postgres (boost-manager)	3m 40s
tests-postgres (iot-config)	3m 1s
tests-postgres (iot-packet-verifier)	4m 44s
tests-postgres (iot-verifier)	4m 4s
tests-postgres (mobile-config)	2m 57s
tests-postgres (mobile-verifier)	3m 45s
build-release	0s
	39m 18s

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