'PolicyInterpreter' object has no attribute 'decide'

[FatQiang]

When I run case_study_bank.ipynb, an error occur in line pi.decide(whatif_data) - 'PolicyInterpreter' object has no attribute 'decide'.

[lixfz]

PolicyInterpreter.decide() was added in the main branch which is not released yet. Upgrade YLearn from latest source code to run latest case study please.