+1.12 Thu Feb 4 16:33:19 GMT 2010
+ - Remove handling of "hits" parameter in the present handler.
+ That should never have been there (and was probably sloppy
+ copy), and prevents compilation under YAZ 4, which has
+ removed the member from the bend_present_rr structure.
+
+1.11 Wed Mar 4 15:12:53 GMT 2009
+ - Add explicit statement of license (same terms as Perl).
+ No functional changes.
+
+1.10 Tue Mar 3 22:47:16 GMT 2009
+ - Document the init-handler's PEER_NAME argument.
+ - Update URL into YAZ documentation.
+ - bend_delete() no longer returns without value.
+ - Route around ActivePerl's damage to the "open" symbol.
+
+1.09 Mon Sep 10 15:54:38 BST 2007
+ - *Argh* Another mixed statement/declaration.
+
+1.08 Mon Sep 10 12:15:29 BST 2007
+ - *Sigh* Fix mixed statement/declaration.
+
+1.07 Sat Sep 1 10:31:26 BST 2007
+ - When the scan-handler callback returns, do not attempt to
+ copy the terms from Perl structures if the error-code is
+ non-zero (i.e. if an error has occurred). This protects
+ against a segmentation fault when the Perl callback does not
+ explicitly set $args->{NUMBER} = 0 on error.
+ - Correct transcription of string-valued attributes in
+ $args->{RPN}.
+ - Scan handler is now passed RPN as well as TERM, a tree of
+ Perl structures representing the entire scan clause
+ including access-points and other attributes (which are
+ discarded from TERM).
+ - The various classes used to represent nodes in the RPN query
+ tree (Net::Z3950::APDU::Query, Net::Z3950::RPN::And,
+ Net::Z3950::RPN::Or, Net::Z3950::RPN::AndNot,
+ Net::Z3950::RPN::Term and Net::Z3950::RPN::RSID) now all
+ share a newly introduced superclass Net::Z3950::RPN::Node,
+ making it possible to write methods that apply to all node
+ types.
+ - A utility method toPQF() is provided for
+ Net::Z3950::RPN::Node, enabling the RPN tree to be converted
+ back into a flat PQF query.
+ - Add support for the Delete Result Set service.
+ - Add documentation for the Sort service.