Refactor of LiquidContainer vs. GridContainer to support grids which don't contain liquids.
Refactor of LiquidContainer vs. GridContainer to support grids which don't contain liquids.

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