bbotk 1.11.0

• fix: Asynchronous optimization no longer calls the deprecated rush$fail_tasks() method when cleaning up after termination.
  Queued tasks are now removed with rush$empty_queue() and running tasks are left to the workers that own them.
• feat: ArchiveAsync gains additional methods wrapping the rush task API: $push_point(), $push_running_points(), $push_finished_point(), $push_finished_points(), $push_failed_points(), $finish_point(), $finish_points(), $fail_point(), and $fail_points().
• feat: ArchiveAsync$push_failed_point() now creates a new failed point in the archive instead of moving a running point to the failed points; use $fail_point() to move a running point to the failed points.
• refactor: ArchiveAsync$push_result() is deprecated, use $finish_point() instead.