What's new on 3.x release

• queue management admin grid;
• "result" field on the grid above to see the output of jobs (including exception messages on failed ones);
• auto-retry failed jobs (3 tries by default, configurable through the new admin settings);
• auto cleanup of old jobs (30 days for failed ones/7 days for successful ones, also configurable via admin);
• manual retry through the grid whenever you want;
• manual cancel/cleanup through the grid whenever you want;
• jobs grouping to easily distinguish them;
• 100% retrocompatible with older releases, so we don't break yours or our stores 👊🏼