Add missing tests for Model.entropy
Add missing tests for Model.entropy

DarkMio/cobe,tiagochiavericosta/cobe,meska/cobe,tiagochiavericosta/cobe,wodim/cobe-ng,wodim/cobe-ng,LeMagnesium/cobe,pteichman/cobe,LeMagnesium/cobe,DarkMio/cobe,meska/cobe,pteichman/cobe