export an intermediate, un-expanded, seed table with float weights

[bstabler]

@binnympaul - For survey weighting application, we need to switch off integerization in PopulationSim. My understanding is that if the integerization model steps is not run then PopulationSIm algorithm must be working with only float weights. The seed sample should not be expanded since the weight have not been integerized. Therefore, a final synthetic population will not be produced. So, how do we configure PopulationSim to export an intermediate, un-expanded, seed table with float weights?

[bstabler]

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