+1.0 [IN PROGRESS]
+ - Support for CQL version 1.2 as described at
+ http://www.loc.gov/standards/sru/next-version.html
+ based on support for version 1.1 as described at
+ http://www.loc.gov/standards/sru/cql/
+ Since this is a significant leap forward, the version
+ numbering increases to the next major version.
+ - "Qualifiers" renamed as "indexes" throughout, to match what
+ is now universal CQL terminology.
+
+ PLEASE NOTE THE FOLLOWING INCOMPATIBLE API CHANGES
+ - The class UnknownQualifierException is replaced by
+ UnknownIndexException.
+ - The CQLTermNode method getQualifier() is replaced by
+ getIndex().
+
+0.7 Thu Sep 4 22:51:11 2003
+ - Support for profiled relations and relation modifiers:
+ recognise any non-key word as a relation or modifier,
+ rejecting those that are not of the form <prefix>.<name>
+ since these must be explicitly tied to a "context" (what
+ used to be called a qualifier-set or index-set).
+
+0.6 Tue Jul 29 23:33:56 2003
+ - Include Ralph's fix for CQLTermNode::toType1BER() to prevent
+ it surrounding multi-word terms in quotes when encoded into
+ BER packet.
+
+0.5 Wed Feb 5 15:50:57 2003
+ - Add an extra back-end method,
+ byte[] toType1BER(Properties config)
+ which generates an opaque BER-encoded PDU suitable for
+ forwarding to Z39.50 server as a pasrt of a searchRequest
+ APDU. This was contributed by Ralph Levan <levan@oclc.org>
+ - Add srw.resultSet support to the toPFQ() method.
+ - Add new resultSetName() method to CQLNode and its
+ subclasses, returning the name of the referenced result-set
+ for a node that is just a result-set reference, and null for
+ anything else.