* Also removed beforeSplice and afterSplice in favor of just plain splice which is the same as afterSplice used to be - beforeSplice was never used and it was making things more complex looking than needed
Change-Id: Icbbc57eac73a2a206ba35409ab57b3d1a49ab1a5
* Added support for asking if a given node type can have children or grandchildren and what types of nodes can be it's parent or child
* Removed canHaveChildren methods from leaf and branch nodes and converted use of them to depend on factory to read static rules from constructor lookup by type
Change-Id: I9769f95647066576416bacb791c4b68dd0285b35
