7.98: in Access, don't grant modes less than level 0 (op) if anything greater than or equal to level 0 will be given.
            Base::Database's ->create_or_alter_table() now adds missing columns to tables using SQLite's table_info() pragma.
            in Account, added the lookup_sid_aid() to find an account by SID and account ID.
            added add_account() to insert an account from an account hash reference.
            added server command handlers for ACCTINFO, ACCTIDK, and finished ACCT.
            added outgoing command ACCTIDK.