+--- 1.0.22 2009/12/03
+
+Prepare for 64-bit YAZ. yazproxy will still work with YAZ++ 1.1.4 or
+later which means YAZ 3.0.47 or later.
+
+--- 1.0.20 2009/11/19
+
For filter virt_db, the database is a glob pattern and the virtual
database sections are consulted in the order given.