XPath 2.0 implementation

Erratum XQ.E34 is implemented. This affects what can appear after a "/" at the start of an expression. Certain constructs that can appear at the start of a relative path expression are now recognized, when they were previously rejected as errors: for example /element{a}{b} or /a or /unordered{x}. Some other constructs that were previously accepted are now rejected, for example / instance of document-node() (this must now be written (/) instance of document-node()).

In XQuery 1.0 and XQuery 1.1, the pragmas saxon:stream and saxon:validate-type are now ignored (with a warning) if running Saxon-HE or Saxon-PE. Previously they caused a static error.