Update StrategyInterface.php
Update StrategyInterface.php

This PR is to implement functionality as detailed in the AbstractHydrator. This should *not* be a BC break.

https://github.com/zendframework/zf2/blob/master/library/Zend/Stdlib/Hydrator/AbstractHydrator.php#L114
https://github.com/zendframework/zf2/blob/master/library/Zend/Stdlib/Hydrator/AbstractHydrator.php#L131
php-refactoring/zend-array-utility,sravanchandj/zend-stdlib,weierophinney/zend-stdlib,adamlundrigan/zend-stdlib,akrabat/zend-stdlib,MadCat34/zend-stdlib,ezimuel/zend-stdlib