zendframework/zf2 — pull request #2167 by xoob (2012-08-14 14:18:47+00:00)
Title: Make Zend\Form\Element\Select implement InputProviderInterface

`Zend\Form\Element\Select` needs to implement `Zend\InputFilter\InputProviderInterface` in order for `Zend\Form` to pick up its default validators.

I think this was simply missed when the validation code was added in d5e9dac7ac07717be2958f2060957a3629110ad9. Other elements like `Csrf`, `Checkbox`, etc are declared correctly.