angular/angular.js — pull request #4043 by cburgdorf (2013-09-18 16:00:47+00:00)
Title: fix(docs): remove statement about isolated scopes and ngModelController

It's obviously possible to use ngModelController in a directive that uses an isolated scope, so this sentence seems to be outdated.

E.g. the bootstrap datepicker does that:

https://github.com/angular-ui/bootstrap/blob/master/src/datepicker/datepicker.js#L131