hash_str
========
## Strings with Precomputed Hash
A simple library for strings with a precomputed hash.
Features:
- Create HashStr with precomputed hash
- Create HashStrMap utilizing HashStr's precomputed hash
- Intern strings into an explicit cache
- Create HashStr at compile time with a macro, deduplicated
Wishlist:
- Intern strings into a global cache like ustr
Non-Goals:
- Dynamic string type like std String