Streamline dependent-credit logic and update documentation#1937

Merged

martinholmer merged 2 commits intoPSLmodels:masterfrom martinholmer:dep-credit

Mar 30, 2018

+51-73

Commits on Mar 26, 2018

Streamline calculation of dependent credit
martinholmer
committed

Commits on Mar 27, 2018

Revise _DependentCredit_* values in 2017_law.json file
martinholmer
committed