Scaling STATPOP to BfS totals

We would like to be able to scale the current census data to future scenarios. To do this, we want to reweigh the census data so that is fits the predicted total from BfS. A new python module should be written that then can be added to the Swiss scenario pipeline.

• Translate Kirill Müller R scripts into Python.
• Test using simple test data.
• Discuss which aggregate totals we would like to integrate into the pipeline.
• Integrate scaling into pipeline.