Datatypes:
  Fixes from Jena.
    AbtractDateTime does not default to time zone Z.
  Consider switch to javax.xml.datatype.XMLGregorianCalendar from GregorianCalendar
  Explicit XSDDate??

Hashing and *127 - do we need to propagate to Jena3?

RDF datasets through out?
  New API.
  Relationship to quads.
  
Prefixes:
Have a simpler "any prefix, any local name" implementation with checkign hooks for Turtle/XML legal prefix mapping.


Node + NodeValues
  Want nodes with their associated values (BigDecimal etc).
  Same as indexing getValue()?