Separate Stack and Array interfaces.
Implement Stack add-ons as a decorator.
Begin adding functions to read/modify existing page streams.
Export ContentFactory to clients rather than PageFactory.
Create PageDictionary type.
Eliminate functions from existing_page.go found in page_dictionary.go.
Also, add PageDictionary.CloneDictionary() method.
Insert white space in stream reader between each segment of an array of contents streams.
Clean up several minor issues.