Always check the version before release

Last week, I had someone bring to my attention that the SPL's Countable interface was actually first released in PHP 5.1.0… which means I needed to update the PHP dependency on Phly_Hash. I also needed to do so on Phly_Config as it depends on Phly_Hash. I released 1.1.1 versions of each yesterday; the only change in each is the PHP version dependency.