| SAXONICA | 
For conformance with JAXP, the method getURIResolver() on the Controller class
            (Saxon's implementation of the JAXP Transformer) has changed so that if no user-specified
            URIResolver has been defined, the method returns null. Previously it returned the system
            default URIResolver.
         
In the JAXP XPath API, when the XPath expression is applied to a DOM Node, and the result requested
            is of type NODESET, the evaluate() method now attempts to return the result as a DOM
            NodeList object. If the result of the expression contains values that are not nodes, then it will
            return a Java List as before.
         
Comparison of xs:duration values using the less-than and greater-than operators
            (or by sorting) is no longer supported.