Update Slovak translation
Updated Logger.php to make constructor accept Traversable objects
Fixed NULL value throwing InvalidArgumentException in Zend\Log\Logger::__construct()
Changed conditional to PSR-2 format. Refactored to remove duplicate array check.
Removed trailing spaces with php-cs-fixer
Merge pull request #5227
Merge pull request #5227 in master
Merge pull request #5190
Merge pull request #5190 in master
Add "role" to $validGlobalAttributes

See http://www.w3.org/html/wg/drafts/html/master/dom.html#wai-aria
added zendframework/zend-cache as suggest dependency at Zend\Memory
to support swap the memory objects
remove zendframework/zend-stdlib from suggest dependency at Zend\Loader\composer.json
because it not used at this component
Merge pull request #5285
Merge pull request #5285 in master
Merge pull request #5284 from samsonasik/add.zendcache.atmemory

added zendframework/zend-cache as suggest dependency at Zend\Memory