UnionOfRAD/lithium — pull request #474 by jails (2012-05-23 11:17:34+00:00)
Title: Fix some issues of lithium\util\Collection.

Solving some bugs on `unset()` and changing the `ArrayAccess::offsetExist()` behavior. `ArrayAccess::offsetExist()` should indicate if an offset exists and imo it would work like an `array_key_exists()`. `ArrayAccess::offsetExist()` is indeed a magic method for isset but imo it's an inconsistency in the PHP language.