2020 Validation (Contingency Plan)

This PR modifies BAUS to align the 2020 model year output with the 2020 TAZ Land Use data (compiled from the Census and LODES data). The following changes were made to the code and inputs to do so:

Move the initial model summary year to 2020 so that the new "reporting year" for PBA50+ is 2020
Update the regional control totals to match 2020 households by income and employment by sector (inputs change only)
Update the development projects list to better represent development occurring pre-2020 and genericize the file name used in the code
Only activate the preservation strategy after 2020
(TODO): Reassign household incomes to match 2020 TAZ distributions
(TODO): Reassign employment sector counts to match 2020 TAZ distributions

To see the specific tasks where the Asana app for GitHub is being used, see below:
- https://app.asana.com/0/0/1206043405382903

BayAreaMetro / bayarea_urbansim

2020 Validation (Contingency Plan) #347