2 - deployment at connect time is disabled by default, set journal_auto_deploy to reenable
3 - $main_schema->deploy deploys the journalling tables too
4 - support multi column primary keys
5 - rename Change to ChangeLog to avoid conflict with mysql reserved word
6 - fix schema composition when sharing connection
7 - support for nested transactions (produce one changeset, but support stubs
8 for nested changesets in place)
10 - various other cleanups
11 - calling current_changeset outside of txn_do is fatal
12 - fix 'now()' default value, timestamp happens in perl space instead
13 - also call txn_do on the journal schema if the storage object differs
14 - don't call txn_begin twice