+--- 4.2.24 2011/12/21
+
+cql_sortby_to_sortkeys: honor sort prefix.
+
+RPN to CQL: always quote resulting terms. For bizarre reasons, JSTOR's
+SRU server returns 0 hits on ISSN searches unless a CQL term is quoted.
+The rpn2cql family of functions now always returns quoted CQL terms.
+
+Fix CQL to CCL conversion for multiple terms. Add two test cases as well.
+
+--- 4.2.23 2011/12/15