* Modularity improvements:
  * Moved abstract shopping cart logic from the Paypal module to the Payments module
* Caching improvements:
  * Added a new mechanism to uniquely identify page content (a hash-key for cache storage)
  * Replaced the "magentoZoom" plugin with two widgets: the "gallery" and "zoom"
* Fixed bugs:
  * Fixed an issue with inserting an image in WYSIWYG editor where the selected folder was stored in session
  * Fixed an issue with CMS Page Links not being shown because of the empty text in the link
  * Fixed an issue where zooming functionality was not disabled for the responsive design
  * Fixed an issue with zooming on a configurable product page where the main product image was shown instead of the selected option images
* Updated various PHPDoc with parameter and return types
* Moved quote-related multishipping logic to the Multishipping module
* Resolved dependencies between the Payment and Multishipping modules
* Moved the framework part of the Translate functionality from modules to the library
* Created the architecture for the email template library
* Introduced a consistent approach for using the Config scope
* Fixed an issue with the dependency static test