Concurrent Priority Queue
A Priority Queue allows you to prioritize what items come out of the queue based on some predetermined value.
A Concurrent Priority Queue allows you to do this, but it's a Send + Sync type with interior mutability (it can be modified without having an exclusive / mutable reference).
See examples/main for usage - it's an extremely simple API based on push / pop.
Soundness
v0.1.0was an implementation with raw atomics, using Unsafe Rust.v0.2.0or greater uses a RwLock internally, with zero Unsafe Rust.