This should support multiple UKDataset objects, so we can save e.g. the Enhanced FRS for 5 sequential years, aged. We should move all uprating code to a function in PolicyEngine UK (rationale: simplicity. UK-data already depends on UK necessarily. Let's not introduce a bi-directional dependency), that takes a UKDataset as an argument and uprates it with established growthfactors to a different year.
This should support multiple UKDataset objects, so we can save e.g. the Enhanced FRS for 5 sequential years, aged. We should move all uprating code to a function in PolicyEngine UK (rationale: simplicity. UK-data already depends on UK necessarily. Let's not introduce a bi-directional dependency), that takes a UKDataset as an argument and uprates it with established growthfactors to a different year.