Control the various optimizations with config..
-Handle invalidate sessions (-1 hit, control-number search).
-
Live status (via search, present).
-Documentation update.
+Possible threading.
+
+Throw proper diagnostic for bad schema (Z39.50/SRW).
+
+Deal with Z39.50 options properly.
+
+Deal with Z39.50 messages sizes properly.
-SRW/SRU.
+For SRW/SRU, set schema for each returned record.
-Threading.
+Fork to ensure that crashes are catched.