Store SPM geographic adjustments instead of thresholds#918

MaxGhenis merged 1 commit intomainPolicyEngine/policyengine-us-data:mainfrom

codex/us-data-stop-materializing-spm-thresholdPolicyEngine/policyengine-us-data:codex/us-data-stop-materializing-spm-thresholdCopy head branch name to clipboard