Support for entities with mutations.
Support for entities with mutations. Three way join between: Queries: grouped by key and dsOf[ts] Snapshot[InputDf]: Grouped by key and ds providing a FinalBatchIR to be extended. Mutations[MutationDf]: Grouped by key and dsOf[MutationTs] providing an array of updates/deletes to be done With this process the components (end of day batchIr + day's mutations + day's queries -> output)