Question about methodology

Sorry to be opening an issue for a question. I was curious why this library exists compared to `std::fs::canonicalize`, which has the guarantee of Rust to return the real path. Is it a race condition commentary where

- open file
- move file
- move other file to that location

would cause distinct files to return as matches due to having the same path across time, an edge case this lib handles? What stronger guarantees *exactly* does this library aim to offer?

This may benefit from a follow-up to the README clarifying its utility.