Saxon extensions to the W3C XSLT/XQuery specifications
The saxon:distinct() extension function now works on any sequence.
Removed the saxon:range() extension function
(it can now be done using the syntax "a to b")
Changed saxon:tokenize() to return a sequence of strings instead of a node-set
Removed the saxon:node-set() extension function, which is now obsolete.
Removed the saxon:if() extension function, which is superseded by XPath 2.0
conditional expressions.
saxon:closure() function is temporarily withdrawn, because it relies on non-standard
use of the current() function.