There is another feature expected in the next release that I forgot
to mention.  We added an "autopack" parameter to the StorageServer
constructor.  If the autopack argument is a positive number, it is
the number of transactions we wait before automatically triggering
a pack.  The default value is no autopacking, so that existing
behavior is preserved.  If the autopack is used, though, it means
we can run a server without a packing cron job.