Transfer live testing (#198)
Transfer live testing (#198)

* uses Placeable.get_type() to account for WellSeries Placeables

* returns all containers, not just unique containers

OpenTrons/opentrons-api,OpenTrons/opentrons-api,OpenTrons/opentrons-api,Opentrons/labware,OpenTrons/opentrons-api,OpenTrons/opentrons-api,OpenTrons/opentrons_sdk