Procedural macro for generate [struct Unit] in compile time.
This package is the implementation of the procedural macro. For use these macros in your code, [Unit package] is convenient.
```rust extern crate typenum;
use unitproc::unit; use constfrac::Frac; use physical_quantity:: { Unit, Dim }; use typenum;
let height = unit!("ft.").pq(5f64) + unit!("in.").pq(8f64); let cm = unit!("cm").value(height);
assert_eq!(cm, 172.72); ```
This package is in the very early stage.