The Philosopher's Stone

This is a proof-of-concept library that lets you cast between arbitrary types in a safe way. In other words, it's a safe std::mem::transmute!

Example

```rust let mut stringmap: HashMap = HashMap::new(); stringmap.insert(42, "world".into());

let bytesmap: HashMap> = ps::hashmapvalues(ps::stringbytes()).cast(string_map);

assert_eq!(map[42], b"world"); ```