queue-async (deprecated; renamed d3-queue)

This package has been renamed to d3-queue. It provided an asynchronous queue with configurable concurrency for managing task execution order and parallelism. The latest version is 1.2.1, but no further development occurs. Users should migrate to d3-queue, which is maintained as part of the D3 ecosystem. The original queue-async differs from alternatives like async.queue by offering a simpler API and integration with D3's deferred pattern.