Added the concept of visibility for each item, so that it is possible to filter when rendering into HTML, for instance. It is adviced to use a value that ranges from 0 to 4, 4 meaning that the item is the most visible. This is now possible through the 'visibilityThreshold' XSLT parameter.

Now, enables to tell whether the dependencies and requirements should be inherited from the previous versions. How does it work? For each 'Release' XML element...