+1.17 Tue Feb 12 13:30:52 CET 2013
+ - Scan and Search handler gets EXTRA_ARGS . It's represented as
+ a hash. It holds the extra arguments for SRU (URL).
+ - Scan and Search handler may return extra response data in
+ EXTRA_RESPONSE_DATA. That's an XML fragment for SRU extra
+ response data.
+ - Scan Term may include a DISPLAY_TERM (Z39.50 / SRU display term).
+ Thanks to Simon Jacob for patch.
+