HARK interpolaters can be set to, instead of extrapolating linearly, either have a hard cutoff to their max/min value, or else decay toawrds an asymptote.
AgentPopulation's solution interpolates over HARK's solutions, but this second-order interpolation does not have these intercept and decay features, which would be a more automatic way of settling the problems raised in #162
HARK interpolaters can be set to, instead of extrapolating linearly, either have a hard cutoff to their max/min value, or else decay toawrds an asymptote.
AgentPopulation's solution interpolates over HARK's solutions, but this second-order interpolation does not have these intercept and decay features, which would be a more automatic way of settling the problems raised in #162