** The Omniqueue crate is a high-level queuing system that allows users to focus on sending and receiving types, without worrying about the backend used. It provides a simple and flexible way to build queue producers and consumers, with support for multiple backends such as RabbitMQ, Redis streams, SQS, and an in-memory queue. Users can customize the behavior of the queue by using feature guards, constructing the queue with specific configurations, and defining custom encoders and decoders. The crate is designed to be adaptable to different use cases, including those where the backend may not be known until runtime. With its release, Omniqueue becomes a standalone project that other developers can use, and it will continue to evolve with new features and improvements.