standardized abstract class names
added session storages extends abstract session
added a link to the compatible PHP 5.4's SessionHandlerInterface
moved ArrayAccess methods to the abstract base class
added abstract method override skeletons
renamed abstract base class
fixes due to abstract base class renaming
fixes due to abstract base class renaming
moved session implementations into storage folder
renamed Session to DoctrineSession
QA
renamed GuestUser to simply Guest
QA