Adds more support for NodeTypeAlias and DocumentTypeAlias param names for compatibility.
Adds IsDocumentType is-helper method.
Adds unit tests for complex Linq using a Typed IPublishedContent object.
Adds unit tests for complex Linq using dynamics.
Adds support for Single, SingleOrDefault, First, FirstOrDefault, Last, LastOrDefault to dynamics for both DynamicNode and DynamicPublishedContent + unit tests.
Adds support for 'Children' on DynamicNode to keep things consistent, no longer required to have to do 'ChildrenAsList'.
DynamicNode now implements INode... not sure why this wasn't like that before.
